What is the Lewis dot structure for
PF5

Answers

Answer 1

Answer:

40 valence electrons

four covalent bonds and one ionic bond.

Explanation:

see attached

What Is The Lewis Dot Structure ForPF5
Answer 2

If the compound's molecular formula is known, electron dot structures or Lewis dot formulas can be drawn. It describes the type of bond and the placement of the atoms within the molecule that are joined together. The Lewis dot structure for PF₅ is mentioned below.

Lewis dot structures, also known as electron dot structures, are schematics that show the interatomic chemical bonds in a molecule. Additionally, they show how many lone pairs there are overall in each of the atoms that make up the molecule.

Each dot in a Lewis dot structure corresponds to 1 electron. A bond is denoted by two dots placed between the atoms in chemical symbols.

The Lewis structure is:

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Related Questions

How many moles are in 5.25 X 10 25
atoms of Au?

Answers

Answer:

The answer is 87.21 moles

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{5.25 \times {10}^{25} }{6.02 \times {10}^{23} } \\ = 87.2093023...[/tex]

We have the final answer as

87.21 moles

Hope this helps you

#8- please help i suck at this, ill mark brainliest

Answers

Answer:

A.  Synthesis

B.  Combustion

C.  Single-replacement

D.  Decomposition

Explanation:

A:  Synthesis.  Two reactants are combined to form, or synthesize, one product.

B:  Combustion.  This is the general reaction for combustion.  When something combusts, oxygen must be present.  Carbon dioxide and water must also be produced.

C:  Single-replacement. The oxygen from Fe₂O₃ is moved to K to form K₂O.  Only one thing is being moved, or replaced.

D:  Decomposition.  You have one compound that breaks into, or decomposes, into two products.

a cylindrical object has a diameter of 1.25 cm and a height of 6.48 cm. what is its volume?

Answers

The volume of cylinder = 7.948 cm³

Further explanation

Volume is a derivative quantity derived from the length of the principal

The unit of volume can be expressed in liters or milliliters or cubic meters

The volume of the aquarium is almost the same as the beam namely:

V = length x width x height

The volume of a cylinder can be formulated :

[tex]\tt V=\pi.r^2.h[/tex]

r = radius

h = height

radius

Diameter of cylinder = 1.25 cm

radius=r :

[tex]\tt \dfrac{1.25}{2}=0.625~cm[/tex]

volume

[tex]\tt V=\pi\times 0.625^2\times 6.48\\\\V=\boxed{\bold{7.948~cm^3}}[/tex]

Plz help! The best answer will be marked as brainliest!

Make a funny sentence for the beneficial or great uses of magnesium

I DON¨T WANT A MEME!

Here is an example for Mercury, it HAS to for Magnesium

¨I have a long history of use in fluorescent lighting so I can light up any room ¨

Answers

Answer:

"Like when people say like im a party fowl but I'm like OMg, I'm like the reason everyone loves the 4th of July like I am 4th of July.

Explanation:

As magnesium ignites easily in air and burns with a bright light, it's used in flares, fireworks and sparklers. I imagine Magnesium talks like a valley girl lol.

Identify each of the changes listed below as chemical or physical.

Evaporation of Water ________________

Digesting Food ______________________

Rotting Wood ______________________

Rusting Car ______________________

Drying Clothes ______________________

Souring Milk ______________________

Baking a Cake ______________________

Answers

rotting wood, rusting car, souring milk, and digesting food i think

Kayla’s teacher gave each lab group three liquids and asked them to test their pH. Kayla tested each one and recorded her results in the chart below.

She then combined the liquids and tested again. She combined liquid C and D and the resulting pH was 7.

Which statement BEST describes the process that took place when liquid C and D were combined?




F) D. The solution would be slightly acidic.

G) C. The acid and base would neutralize to form a salt.

H) A. The acid and base would neutralize to form an element.

I) B. The solution would be slightly basic.

Answers

Answer:

A. The acid and base would neutralize to form an element.

Answer:

egc jnpz rof join it on google meet

How many moles of gold, a U, are in 3.60×10^-5 G of gold?

Answers

Answer:

See Below.

Explanation:

This is a conversion problem:

Using the molar mass of Gold (given in a periodic table) which is 196.97g/mol

you have

[tex](3.60*10^-5 g) *\frac{1moles}{196.97g}[/tex]

you always arrange the equation in a way to cancel whatever you don't want (grams) and leave what you do want (moles). Here grams cancel (top and bottom), so you're left with:

[tex]\frac{(3.60*10^-5 g) *(1)}{196.97} = 1.83*10^-7[/tex] moles of Gold

simplify 2²×2³ someone plz help​

Answers

Answer:

[tex]2^5[/tex] or 32

Explanation:

The rule for exponents is that [tex]x^a*x^b = x^{a+b[/tex]. Thus, we have a+b = 5 so the answer is 2^5 or 32

What happens to the atomic radius when an electron is lost?
A. The positive ionic radius is the same size as the neutral atomic
radius.
B. The positive ionic radius does not follow a trend with the neutral
radius.
C. The positive ionic radius is smaller than the neutral atomic radius.
D. The positive ionic radius is larger than the neutral atomic radius.

Answers

Answer:the positive ionic radius is smaller than the neutral atomic radius

Explanation:

Answer:The positive ionic radius is smaller than the neutral atomic radius.

Explanation: just took the test

Diffusion of Ammonia in an Aqueous Solution. An ammonia (A)-water (B) solution at 278 K and 4.0 mm thick is in contact at one surface with an organic liquid at this interface. The concentration of ammonia in the organic phase is held constant and is such that the equilibrium concentration of ammonia in the water at this surface is 2.0 wt 'Yo ammonia (density of aqueous solution is 991.7 kg/m3) and the concentration of ammonia in water at the other end of the film 4.0 mm away is 10 wt % (density of 961.7 kg/m3). Water and the organic are insoluble in each other. The diffusion coefficient ofNH3 in water is 1.24 x 10- 9 m 2/sCalculate the flux N_B. Explain.

Answers

Answer:

The Flux N_B = 0

Explanation:

So, we are given the following set of data or parameters which is going to help in solving this particular Question. So, let us take each at a time;

=> "An ammonia (A)-water (B) solution at 278 K and 4.0 mm thick is in contact at one surface with an organic liquid at this interface."

=>" 2.0 wt 'Yo ammonia (density of aqueous solution is 991.7 kg/m3) and the concentration of ammonia in water at the other end of the film 4.0 mm away is 10 wt % (density of 961.7 kg/m3). ''

With the information above, we can determine the N_A(which the question did not specify that we should calculate).

For the value of N_B, it will be equals to zero(0) because the insolubility of water in organic solvent.

What physical property of the metal rods was being tested during step 4 of the procudure?

4. Measure and record how long it takes heat from the hot plate set on "high" to melt the wax ball.

A.
magnetism
B.
thermal conductivity
C.
electrical conductivity
D.
density

Answers

Answer:

B.  thermal conductivity

Explanation:

They physical property being tested during the fourth step is the thermal conductivity of the materials.

Thermal conductivity is the ability of a body to transmit heat energy from one place to another.

Since we are measuring how long it takes for heat from the hot plate to reach the wax ball, this is a typical experiment for measuring thermal conductivity. Most metals are good conductors and heat energy moves fast in them.Non-metals are poor conductors with low thermal conductivity.

HELPPP MEE I NEED HELPP PLEASE
Which person participates mostly in the quaternary level of an economy?
A. A coal miner
3. A car mechanie
C. A college professor
D. A car factory worker
SUBMIT

Answers

Answer:

B.Michanine

Explanation:

Answer: The answer is a college professor since people in the fourth level of industry create, share, and store information. They do research, give advice, report on events, and keep records. Furthermore, workers in the quaternary include teachers, librarians, accountants, scientists, and reporters, nor do the traits describe coal miners, car machines, and a car factory worker as these are the secondary level since their work involves manufacturing, make sure to study! You got this have a g’day. Again, the answer is C: A college professor.

Explanation:


Which of the following is considered a sign of a chemical change?

Answers

i think c i'm not sure tho sorry

How many d electrons does I (atomic number
53) possess?
1. 10
2. 5
3. 8
4. 0
5. 20
6. 53
7. 16

Answers

Answer:

6. 53 is the answer. Hope this helps:)

The number of d electrons that an atom of atomic number 53 possess are 20. Thus, the correct option for this question is 5.

What is an Atomic number?

An atomic number may be defined as the number of protons in the nucleus of an atom that significantly represents the characteristic of a chemical element and determines its specific place in the modern periodic table.

According to the modern periodic table, an element that has an atomic number of 53 is known as Iodine. Its electronic configuration is [tex]1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 4s^2, 3d^1^0, 4p^6, 5s^2, 4d^1^0, 5p^5[/tex]. Thus, according to this electronic configuration, the total number of d electrons are [tex]3d^1^0 and 4d^1^0[/tex].

Therefore, the number of d electrons that an atom of atomic number 53 possess are 20. Thus, the correct option for this question is 5.

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3. Which of the following is NOT an abiotic factor in an ecosystem?
Air pressure
Bacteria
Sunlight
Water

Answers

It is Bacteria........
The answer is Bacteria. Bacteria is biotic.

Observe: Scandium is the first element to contain electrons in the d subshell. How many orbitals does the d subshell have, and how many electrons can fit in the d subshell?

Answers

Answer: 5 orbitals

Explanation:

Each d subshell has 5 orbitals, with 10 electrons. So it's like for every orbital, there are 2 electrons. Look at orbital diagrams (if your teacher made you draw them), and you will see that an arrow pointing both UP AND DOWN represent 2 electrons (arrow upward=1 electron, arrow downward=1 electron)

Here, we are required to determine how many orbitals does the d subshell have, and how many electrons can fit in the d subshell.

The d subshell has 5 orbitals.The number of electrons that can fit in the d subshell is; 10 electrons

The d subshell is first recorded in the shell with energy level 3.

The orbitals in an atom are organized into different layers or electron shells. The d subshell has 5 orbitals in it.

This is evident from the formular; 2l + 1.

where l = 2 for the d subshell.

As with any sub-orbital, the sub-orbitals in the d-subshell also contain 2 electrons each.

According to Pauli's exclusion principle, the two electrons in each must have opposing spin.

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I will give brainliest !

Which of the following is NOT an example of how biotic factors interact with abiotic factors in an ecosystem?

A) Plants remove carbon dioxide from the air and add oxygen.
B) Animals cause erosion by digging in the dirt.
C) A lion preys on a herd of gazelle.
D) A lizard raises its body temperature by using heat from the Sun.

Answers

Answer:

C

Explanation:

I had the same answer during school and the teacher said it was correct but if it isnt I'm super sorry

A lion preying  on a herd of gazelle is not an example of how biotic factors interact with abiotic factors in an ecosystem.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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4. Advection fog forms when warm moist air comes in from the Pacific Ocean and

blows over the cold California current.

A.True

B.False

Answers

Answer:

A, True

Explanation:

use the facts that water has a higher specific heat than rock (such as Granite) to explain the differences in the temperature curves for the two cities in the graph.

Answers

Since water has a high specific heat, that results in water being able to store/require more energy in order to change it’s temperature. Since San Francisco is so close to water, that would mean that it’s temperature should vary less since water would be able to keep the temperature around the same value even if there was an increase or decrease in thermal energy.  

How many significant figures does this measurement contain? 0.0000508800 Gm

Answers

Answer:

There are 6 significant figures

Answer:

6 significant figures

Explanation:

When counting significant figures, start on the left with the first non-zero number. Count all numbers that fall between non-zero numbers. Count all zeros after a 1-9 and after the decimal.

Please help me, I am struggling please help

Answers

Answer:

Colors are seen by burning of metal salts, for example Sodium chloride makes yellow frame.
It is very common for fireworks to contain Aluminum, Iron, Steal, Zinc or the Magnesium’s dust to create bright light.

A sample of a gas occupies 6.00 liters at a temperature of 200 K. If the pressure remains constant and the temperature is raised to 600 K, the volume of gas sample would be 1.)18.0 L 2.)2.00 L 3.)3.00 L 4.)12.0 L​

Answers

Answer:

18

Explanation:

The volume of the gas should be 1. 18.0 L

Calculation of the volume of the gas;

Since A sample of a gas occupies 6.00 liters at a temperature of 200 K. If the pressure remains constant and the temperature is raised to 600 K

So here the volume of the gas should be

= 600 * 6 /200

= 18.0 L

hence, the first option is correct.

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Which of these reactants will produce a precipitate if they react?
NaC2H3O2+ HCI
NaOH + HCI
NaNO3 + CaCl2
KOH + Mg(NO3)2

Answers

Answer:

KOH+Mg(NO3)2

Explanation:

The double replacement reaction will result in:

2KOH(aq) + Mg(NO3)2[tex]\\[/tex](aq)--> 2KNO3(aq) + Mg(OH)2(s)

Solubility rules prove that Mg+OH^- is insoluble and will result in a precipitate (solid)

change word equation into chemical equation.
a Calcium carbonate -----> Calcium oxide + Carbon dioxide
b Zinc + Sulphuric acid -----> Zinc sulphate + Hydrogen​

Answers

Answer:

Ca(CO3) --> CaO + CO2

Zn + H2SO4 --> ZnSO4 + 2H2

Explanation:

^^^

What type of heat transfer happens in the Inner Core?

Answers

Answer: Conduction

Explanation:

Why are metals malleable?

a
They are shiny.
b
The electrons are delocalized and able to move between the atoms.
c
The electrons are held tightly within the lattice structure making it strong.
d
The electrons are shared between two metal ions and this holds the atoms together.

Answers

Answer:

b is the anwer

Explanation:

the option is the explanation

?
The group number tells the number of
Elements in the column
Number of valence electrons
O Number of energy levels
O Number of protons in the elements

Answers

Answer:

number of valence electrons

Explanation:

elements in the same group has same number of valence electrons

Someone drops a book on the floor, and it makes a loud noise. At that time, you turn to look at the person who dropped the book. Turning and looking at the person who dropped the book is an example of a…

A. Phototropism

B. Response

C. Hydrotropism

D. Stimulus

Answers

Answer:

D

Explanation:

Can someone please help me

Answers

I think the answer would be A because O is oxygen and it has 7. Although it’s in parentheses and has a 2 on the outside of those parentheses, so you would multiply and 7 x 2 = 14. 14 is larger than the other ones.
Hopefully I’m right and hopefully that helps.

What is the difference between the crest and the trough of a wave?

Answers

Answer:

Trough is the lower bound of wave, while the crest is the upper bound of a wave.

Explanation:

see picture attatched

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