If I have 12 protons, how many neutrons and electrons would I need to make a stable atom?

Answers

Answer 1

Answer:

im pretty sure you need 15 in all but dont get mad it thats wrong, so you would i think need 3 neutrons

Explanation:

Answer 2

In an atom, there are 12 electrons and protons while the number of neutrons is 6.

What is an atom?

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Related Questions

A physical change is easier / more difficult to reverse than a chemical change.

Answers

Answer:

the answer is that a physical change is easier to reverse then a chemical change.

Explanation: In order for a physical change to take place it's easier to just undo what happened then if it was a chemical change because in order for very few chemical changes to reverse to it's original substance you would need another chemical change.

True or false

Each family represents the number of energy levels present in an atom of the element.

Answers

Answer:

true because of the elements

Answer question number 3

Answers

Answer:

A

Explanation:

A mixture is formed when two or more substances are physically mixed together. A compound is formed when two or more substances are chemically combined through a chemical reaction.

Which is the IUPAC name for NO?
nitric oxide
binitrogen oxide
dinitrogen dioxide
nitrogen monoxide

Answers

The IUPAC name for NO is nitric oxide. The correct option is A.

What is IUPAC naming?

The International Union of Pure and Applied Chemistry (IUPAC) is a global organization that represents chemistry as well as related sciences and technologies.

The chemical compound's identity is represented by its common and IUPAC names, which differ from one another. Every chemical compound has multiple names.

Complete the following step-by-step response: The IUPAC nomenclature is a standardized name given to organic compounds in accordance with official naming rules.

Nitric oxide, also known as NO, is a colorless gas. It is one of the most important nitrogen oxides.

Nitric oxide is a free radical, which means it has an unpaired electron, which is sometimes represented in its chemical formula by a dot.

Thus, the correct option is A.

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Answer:

D: Nitrogen Monoxide

Explanation:

There's one Nitrogen atom and one Oxygen atom

How would you arrange the objects below from greatest to least volume?

A balloon
A water bottle
A bottle of soda
A rock

Answers

Answer:

A balloon

A bottle of soda

A rock

A water bottle

Explanation:

A rock
A balloon
A water bottle
A bottle of soda.

Molecules in a liquid are:
closer together than in a gas
moving more quickly than in a solid
moving more slowly than in a gas
all of the above
Please help!!!

Answers

Answer:

all of the above

Explanation:

Answer
All of the above
Explanation:

25 POINTS
Boyd takes additional measurements of the mass of product formed in a reaction. He uses a balance that has smaller graduations than the first balance he used.
What is Boyd most likely trying to change?

Options:
He is trying to increase his accuracy but not his precision.
He is trying to increase his precision but not his accuracy.
He is trying to decrease his precision and increase his accuracy.
He is trying to increase his precision and decrease his accuracy.

Answers

Answer:

The correct option is A: "He is trying to increase his accuracy but not his precision"

Explanation:

Accuracy of measurement is when the value of the measurement is close to the actual value of that measurement while precision is when the experiment is repeated using the same instrument but obtaining different values.

When Boyd changed the weighing balance in his experiment to a smaller one, the smaller weighing balance has better accuracy (smaller graduations) than the initially used one because the smaller weighing balance will provide a value close to the actual value of the mass of the product. If he had, however, repeated the experiment without changing the weighing balance, he would have sought to increase his precision.

From the description above, it can be said that Boyd was trying to increase his accuracy but not his precision

Answer:

The correct option is A: "He is trying to increase his accuracy but not his precision"

Explanation:

right on EDGE 2021

How to find the number of atoms?

Answers

To find the number of atoms, we multiple the number of mols by Avogadro's number, about 6.02x10^23

Mark Brainliest!

Answer:

to calculate the numbers of atoms in a sample, divide it's weight in grams by the amu atomic mass from the periodic table, then multiply the result by avogadro's number: 6.0 × 10^24

8. Describe how crystals of copper sulphate are prepared.​

Answers

Answer:

Take a cupful of water in a beaker and add a few drops of dilute sulphuric acid. Heat the water. When it starts boiling, add copper sulphate powder slowly while stirring continuously. ... Crystals of copper sulphate will be seen at the bottom of the beaker.

Hope it helps

N2+H2》NH3


is it balanced or unbalanced ​

Answers

This is unbalanced. The balanced equation would be:
N2 + 3H2 -> 2NH3

HELP ASAPP JUST TELL ME WHAT TO PUT IN THE MISSING SPACES words(cell,microorganisms,micrometer,microscopic,molecule)

Answers

Answer:

microorganisms, molecule, microscopic, cell, micrometer

Explanation:

If you find my answer helpful

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compound name of SO2

Answers

The compound name is SO2 is Sulfur dioxide. I hope this helps!!

What are the benefits and dangers of the Iron element in our daily life?

Answers

Benefits; helps our red blood cells transport oxygen all around our body

A car travels 45 miles per hour. What is this speed in feet per hour?

Answers

Answer:

64

hopeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

It would be 45 distance for feet per hour

What is the effect of tap water, sea water, and rainwater on the rusting rate of iron?
(Please i need an answer π-π) ​

Answers

Answer:

The more acidic the solution the faster it rusts. More Na = more rust

Explanation:

The transition metals (with the exception of Zn, Cd and Hg) are very much hard and have low volatility. Why Zn ,Cd and Hg has low melting points. (a) These have all their electrons paired. (b) These have maximum number of unpaired electrons. (c) These have very strong metallic bonding. (d) These have more metal-metal bonding.

Answers

Answer:

Zn ,Cd and Hg has low melting points because - These have all their electrons paired.

Explanation:

These have all their electrons paired -: All the electrons in the d-subshell are combined with Zn , Cd and Hg. The metallic bonds present in them are, therefore, weak. This is why they have low points of melting and bolting. therefore , this statement is true. These have maximum number of unpaired electrons. Since , these transition metals have all electrons paired , so this statement is incorrect.These have very strong metallic bonding -: Zn, Cd and Hg d-orbital are completely filled. They have poor metallic bonding and less compact packing due to their fully filled d-orbitals, so all of them are volatile in nature. Therefore, this statement is also not valid .These have more metal-metal bonding. -: Since , their metallic bond is weak , so this statement is not true .

Hence , the correct option is A (These have all their electrons paired).

HELP!!!
write the scientific names of these ionic compounds

Answers

Answer:

• Copper chloride

• Copper (II) chloride

• Iron (II) sulfide

• Iron (III) sulfide

what happens to the molecules as water freezes PLS HELP THIS IS DO TODAY

Answers

During freezing, water molecules lose energy and do not vibrate or move around as vigorously. This allows more stable hydrogen-bonds to form between water molecules, as there is less energy to break the bonds. ... Thus water expands as it freezes, and ice floats atop water.

When water molecule freezes, the water molecules have slowed down enough that their attractions fixed them into fixed positions.

What do you mean by freezing ?

The term freezing is defined as a phase transition where a liquid converted into a solid when its temperature is lowered below its freezing point.

The freezing point is the temperature at which a liquid turns solid. In the freezer, for example, water-filled ice cube trays.

Water molecules freeze in a hexagonal pattern, with molecules further apart than when the water was liquid. It is worth noting that the molecules in ice would be vibrating.

Thus, When water freezes, the water molecules slow down to the point where their attractions arrange them into fixed positions.

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What is the relationship between the latitude and hours of daylight

Answers

Answer:

The tilt of the Earth's axis also defines the length of daylight.Daylight hours are shortest in each hemisphere winter. Between summer and winter

solistice the number of daylight hours decreases and the rate of decrease is larger the higher the latitude.The fewer sunlight hours the colder nights.

Why MgO will form after Mg reacting with CuO? (mcq)
Mg forms positive ions and O forms negative ions
Mg is more reactive than Cu
CuO have loose bonding

Answers

Answer:

Mg is more reactive than Cu

Explanation:

In the reaction between Mg and CuO to form MgO, MgO will form because Mg is more reactive than Cu.

This kind of reaction is called a single replacement or single displacement reaction.

The replacement of a metallic ion in solution by a metal atom higher in the activity series than the metal in solution falls into this category of reactions. The element Mg is higher than Cu in the activity series. The higher an element is in the activity series, the more reactive they are. Since Mg is more reactive, it will displace the Cu from CuO.

3. In an exercise to teach students how to use and analytical balance, the instructor
gives a student a quarter which has been pre-weighed as 5.6026 g. The weight that the
student obtains for the same quarter is 5.6013 g. What is the percent error in the
students reading?

Answers

Answer:

The percent error is 0.023%.

Explanation:

Pre-weighed of a quarter is 5.6026 g.

The weight that the  student obtains for the same quarter is 5.6013 g.

We need to find the percent error in the students reading. It is given by the formula as follows :

[tex]\%=\dfrac{|\text{original value-calculated value}|}{\text{original value}}\times 100[/tex]

Putting all the values, we get :

[tex]\%=\dfrac{5.6026 -5.6013 }{5.6026 }\times 100\\\\\%=0.023\%[/tex]

So, the percent error is 0.023%.

the ability for a substance to rust is
a. oxidation
b.rustability
c.magnetic attraction
d.reactivity

Answers

Answer:

i think it is letter b. rustability but not so sureeee

Refer to your periodic table:


Which of the following has the smallest atomic radius?


Bromine


Astatine


Iodine


Fluorine

Answers

iondine

Explanation:

bromine has 185pm, astatine haa 200, iondine has 140 and lastly fluorine has 147. so iondine has the smallest atomic radius

What are natural resources

Answers

Answer:

resources that come from the ground or eath naturally which also means that those minerals like coal take hundreds of years to be created

Which of the following is NOT an example of a chemical change? *
O Corrosion
O Grinding
O Combustion
O Rust

Answers

Grinding as it’s a physical not chemical change :)


What’s this called please help

Answers

Answer:

the answer is a linear

Explanation:

heres a graph different ones at this link

what makes a substance a molecule? it’s 7th grade science

Answers

Molecule substances are formed when two or more atoms join together by covalent bonds.

Answer:

Molecular substances are made when two or more atoms join together by covalent bonds.

Explanation:

I hope this helps. I took the same class.

Why is the nitrogen cycle considered a closed system?

Answers

Answer:

because nitrogen is fixed by bacteria and assimilated by plants

Explanation:

Answer:

It is a considered a closed system because nitrogen is fixed by bacteria and is taken in by plants.

Explanation:

How many atoms are present in 7.50 mol of chlorine atoms? _

Answers

Answer:

4.52 x 10²⁴ atoms Cl

Explanation:

A mole is a name that means a certain number like a dozen means 12. 1 mole of chlorine atoms is 6.022 x 10²³ chlorine atoms. The unit conversion is 6.022 x 10²³/mol.

[tex]7.50molCl*\frac{6.022 x 10^{23} atomsCl}{1molCl} = 4.5165*10^{24} atomsCl[/tex]

Round to 4.52 x 10²⁴ atoms Cl for the correct number significant figures.

Write the word equations for the following balanced chemical equations.
a. Zn + 2HCl → ZnCl2 + H2
b. 2503 2502 + O2

Answers

Answer:

21

Explanation:9+10

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