how many valence electrons are in the element gallium? explain how you determined the number.

Answers

Answer 1

Gallium has three valence electrons.

Elements in the periodic table are classified into groups and periods. Elements in a given group have the same number of valence electrons on their outermost shell while the elements in a period have the same number of shells.

All the elements in group 13 have three electrons in their outermost shell. Gallium is an element of group 13. This means that gallium also has three electrons in its outermost shell(valence electrons).

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Answer 2

Gallium has 3 valence electrons (1 electron in the 4p orbital and 2 electrons in the 4s orbital) because the valence electrons are those located in the outermost energy level of an atom.

Gallium has an atomic number of 31, which means it has 31 electrons in total. The electron configuration of gallium can be represented as [Ar] 3d¹⁰ 4s² 4p¹.

Within the n=4 shell, gallium has electrons in the 4s and 4p orbitals. The 4s orbital can hold a maximum of 2 electrons, while the 4p orbital can hold a maximum of 6 electrons. In the case of gallium, there is 1 electron in the 4p orbital.

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Related Questions

Which would most likely be done while designing a solution?


researching the current uses of a fuel type

sketching a diagram of a new medical device

reporting the results of using a prototype

redesigning a model airplane that did not fly well

Answers

Answer:

sketching a diagram of a new medical device (b)

Explanation:

its on edge technical design not d i got that one wrong

Answer:

the answer is b

Explanation: i took the test edge 2021

similarities about homogeneous and heterogeneous mixtures

Answers

Answer:

A homogeneous mixture has the same uniform appearance and composition throughout. Many homogeneous mixtures are commonly referred to as solutions. A heterogeneous mixture consists of visibly different substances or phases. The three phases or states of matter are gas, liquid, and solid.

Explanation:

yea

Which of these elements have just one valence electron?

Answers

Answer:

Only Hydrogen and Group 1 elements have 1 valence electron

Explanation:

the valence number of electrons is the group number in the periodic table. So, the group 1 atoms( along with hydrogen) have 1 outer-shell electrons [valence electrons]

A single paper clip weighs about one gram. So 10 paper clips would weigh?

Answers

About 10 grams

1 x 10= 10 or 1:1 > 10:10

A wind up toy that is wound up and moving

Answers

Answer:

A wind-up toy is wound up and moving across level ground. The toy is speeding up.

Explanation:

this will or should helpyou

You are stranded on survivor island in which there are already 375 other survivors. For every survivor there are two hands, for every hand there is an eye; for every eye, there is a footprint; and for every 4 footprints, there is a dinosaur; for every half dinosaur, there are40 ducks; for every 20 ducks, there are 32 pineapples; for every 12 pineapples, there is 1 palm tree; for every 30 palm trees, there is 1 wave; for every wave, there are 100 anchors; and for every anchor, there are 30 turtles. How many turtles are on the island? Use dimensional analysis to solve this calculation.

Answers

Answer:

its in the answer

Explanation:

Write and balance this equation. Solid iron reacts with fluorine gas to produce crystalline iron(III) fluoride.

Answers

Answer:

iron+flourine.............iron flouride

Fe+F2.............FeF3

the above reaction is not balanced

now to balance this reaction

2Fe+3F2...........2FeF3

now this reaction is balanced

The balanced equation is: 2Fe + 3F2 ⇒ 2FeF3

How to balance an equation?

A chemical equation needs to be balanced if you want to make the wide variety of the atoms of the reactants equal to the variety of the atoms of the goods.

Given,

Iron + fluorine ⇒ Iron Flouride

Fe + F2 ⇒ FeF3

Now to balance this reaction:

2Fe + 3F2  ⇒ 2FeF3

This reaction is balanced.

What is iron fluoride used for?

This medicine is a mixture manufactured from nutrients, iron, and fluoride. it's miles utilized in infants and youngsters to deal with or prevent deficiency because of terrible weight loss programs or low tiers of fluoride in drinking water and other sources.

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What should you always do at the end of a lab

Answers

Answer:clean up the area

Explanation:

plz answer soon need answer
when talking about sodium carbonate reaction as the amount of surface area increases what happens to the rate of this reaction????
rate is faster
rate is slower
rate stays same​

Answers

Answer:

rate is faster

Explanation:

the rate of reaction increases.

Answer:

The rate is faster

Explanation:

just did it on edg :)


1. Which statement best describes why a gas is
easily compressible while most solids
are incompressible?
A. The molecules of a gas are much smaller
than those of a solid.
B. The molecules of a solid are not attracted to
one another.
C. The molecules of a gas are much further
apart than those of a solid.
D. The molecules of a solid are much larger
than those of a gas.

Answers

C) The molecules of a gas are much further

apart than those of a solid.

A gas is easily compressible while most solids are incompressible because the molecules of gas are much further apart than those of a solid.

What are gases?

Gases is one of the four fundamental state of matter.

Gases can be defined as phase of matter that neither have fixed shape nor have fixed volume.

The molecules of gases are far apart from each other as compare to other phases of matter.

The change in properties of volume is known as compressibility and those fluid whose volume changes are known as compressible fluids or gases.

The fluids which does not compressed or expanded and its volume remain constant are known as incompressible fluids or gases.

Thus, gas is easily compressible while most solids are incompressible because the molecules of gas are much further apart than those of a solid.

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plz help meh, I think there is trick question!!!

Answers

Answer:

Explanation:

Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (all atoms with six protons are carbon atoms), the number of protons in an atom is called the atomic number. In contrast, the number of neutrons for a given element can vary.

I hope I helped you!

Answer:

Atoms of each element contain a characteristic number of protons. In fact, the number of protons determines what atom we are looking at (e.g., all atoms with six protons are carbon atoms); the number of protons in an atom is called the atomic number. In contrast, the number of neutrons for a given element can vary.

Explanation:

So i would say C

A) remove 1.5ml of liquid
B) add 1.5 ml of liquid
C) remove 0.5 ml of liquid
D) add 0.5 mo of liquid​

Answers

C..............................

What is mass in grams of 300 ml of salt water with a density of 1.30 grams per centimeter cubed

Answers

Answer:

The answer is

390 g

Explanation:

The mass of a substance given the density and volume can be found by using the formula

mass = Density × volume

From the question

Density = 1.30 g/cm³

volume = 300 mL

Substitute the values into the above formula and solve

That's

mass = 1.3 × 300

We have the final answer as

390 g

Hope this helps you

Which of the examples represent potential energy A candy bar Wind A stretched rubber band Rowing a boat A ball rollinv down a hill A roller coaster at the top of a hill

Answers

Answer:

A candy bar

A stretched rubber band

A roller coaster at the top of a hill

Explanation:

Potential energy is the energy present as a result of the position of an object. This energy depicts zero motion or movement unlike kinetic energy.

A candy bar, stretched rubber band and roller coaster at the top of a hill all indicate positions without any said explanation of movement.

The other option choices depicts a type of movement .This is why the three option choices are correct in this scenario.

The examples that represent potential energy are:

A. A candy bar

B. A stretched rubber band

D. A roller coaster at the top of a hill

What is Potential energy?

It is the stored energy in any object or system by virtue of its position or arrangement of parts. This energy depicts zero motion or movement unlike kinetic energy. For example : A candy bar, stretched rubber band and roller coaster at the top of a hill all indicate positions without any said explanation of movement.

Thus, correct options are A, B and D.

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Why are scientific models important in the study of science?

Answers

Answer:

In science, amodel is a representation of an idea, an object or even a process or a system that is used to describe and explain phenomena that cannot be experienced directly. Models are central to what scientists do, both in their research as well as when communicating their explanations.

Explanation:

Answer:

They always involve critical mathematical calculations.

Explanation:

tell me if im wrong but this one makes the most since to me

dimensional analysis 9 lemons = 1 orange How many lemons in 10 oranges?

Answers

1 orange = 9 lemons
So, 10 oranges= 90 lemons

Answer: there are 90 lemons in 10 oranges

Which of the following is NOT an extensive property?

Answers

Answer:

Density

Explanation:

It's an intensive property because it doesn't depend on mass

Look at the picture. Assume that all of these substances are in different containers. In all of
these substances, atoms have combined to form
ions
elements
molecules
mixtures

Answers

Answer:

Elements?

Explanation:

Im not sure but I think its elements because carbon dioxide is, and the others sound like it too

If the density of water is 1.0 g/mL, what is the mass of 2.0 L of water?

Answers

Answer:

Density=1.0 g/mL

Volume=2.0 L

Mass=?

Density=mass/volume

Mass=density*volume

Mass=1.0*2.0

Mass=2g

1. Which number is more accurate if the correct number is 3.5. Is it 3.1, 3.3, 3.6, or 4.0?

Answers

Seems to be 3.6 since it’s closer by 1, As for 4.0 it would be 5 more.

Answer:

3.6

Explanation:

3.6 is only 0.1 away from 3.5

I hope this helped and plz give brainliest!

brownie mix a homogeneous or a heterogeneous mixture

pls helpppp​

Answers

Brownie mix is a heterogeneous mixture:)

This beaker is filled with three liquids of different colors and densities. Which color substance is the most dense? How do you know

Answers

Answer:

the one at the bottom

Explanation:

the more dense an object is in this kind of demonstration (which is called a density tower btw) the lower it'd be so taking this reason into consideration the lowest would be the densest

Environmental science is a *

A. narrowly defined set of physical, life, and social sciences.
B. subject that only deals with the environment.
C. collective of like-minded people that attempt to raise awareness and take action to protect our environment.
D. interdisciplinary subject used to gain knowledge about the environment.

Answers

i would say that the answer is d?

Approximately how tall is Baker Hill? Don't forget your unit

Answers

Answer:

the elevation is 1,539

Explanation:

which statement best describes what happens when you hold a cold drink in your hand?

Answers

Answer:

heat will flow from your hand (the warmer object) to the cup (the colder object), and your hands will start to feel cold because their losing heat energy

Physical and chemical properties

Answers

Answer:

Chemical properties

-It is  not reverseable

-Change in energy is  seen

-It is permanent change

-The change take place in both physical and chemical properties of matter

Physical properties

-The change takes place only in physical property of matter

-It can be reversed back

-It is temporary change

-Change in energy is not seen

Describe how you would measure the density of a boat (how would you predict if it would float )

Answers

Answer:

Please find the description below

Explanation:

The density of a substance refers to its mass per unit of its volume i.e the amount of a substance contained in a given volume. The density is calculated using the formula:

Density = mass/volume

Using this formula, with the known value for mass and volume of the boat, the density of the boat can be calculated.

An object will FLOAT on a liquid substance if its density is lower than that of the liquid while it will SINK if it has a higher density than that of the liquid.

In this case, with a known density of water, which is 1g/cm^3 or 1000kg/m^3,

a boat placed on water will FLOAT if its density is <1g/cm^3 (less than) while it will SINK if its density is >1g/cm^3 (greater than).

Which statement describes a controlled experiment? A.) It has one group in which the controlled variable is tested, and another in which the manipulated variable is tested. B.) It has one group in which the responding variable is tested, and another in which the responding variable is not tested. C.) It has one group in which the manipulated variable is tested, and another in which the responding variable is tested. D.) It has one group in which the manipulated variable is tested, and another in which the manipulated variable is not tested.

Answers

Answer:C.) It has one group in which the manipulated variable is tested, and another in which the responding variable is tested

Explanation: hope this helps

The statement that describes a controlled experiment is that it has one group in which the manipulated variable is tested, and another in which the responding variable is tested (option C).

What is a controlled experiment?

A controlled experiment is an experiment where one variable is tested at a time and all other variables are kept constant.

An experiment consists of a manipulated or independent variable, which is the variable changed, and a responding or dependent variable, which is the variable measured.

Therefore, statement that describes a controlled experiment is that it has one group in which the manipulated variable is tested, and another in which the responding variable is tested.

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Is this atom Reactive (unstable) or Unreactive (stable) ?

Answers

Answer:

The answer is Unreactive.

Explanation:

This is an unreactive atom because it has completely filled out stable electrons in the outer shell.

8 electrons in the outer shell means stable.

Students learned that objects can exert forces on other objects without touching. Which three investigations will provide evidence what they have learned. a measuring how close a soda can must be before it rolls toward a balloon that has been rubbed

Answers

Answer:

b

Explanation:

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