Atomic Structure - 3

Question 1

What is the proton/atomic number?

Accepted Answer

the number of protons in the nucleus of an atom

Question 2

What is the nucleon/mass number?

Accepted Answer

the total number of protons and neutrons in a nucleus.

Question 3

What is the top left number in nuclide notation?

Accepted Answer

nucleon/mass number

Question 4

What is the bottom left number in nuclide notation?

Accepted Answer

proton/atomic number

Question 5

What is the top right number in nuclide notation?

Accepted Answer

charge of ion

Question 6

What is the bottom right number in nuclide notation?

Accepted Answer

number of atoms in molecule

Question 7

What is an ion

Accepted Answer

A particle formed when an atom gains or loses electrons while the number of protons and neutrons remain the same

Question 8

When an ion has a charge of +2, how does it have more or less electrons

Accepted Answer

less electrons

Question 9

What is an isotope?

Accepted Answer

atoms with the same number of protons but different number of neutrons

Question 10

Where are electrons found in an atom?

Accepted Answer

In electron shells around the nucleus

Question 11

Which electron shell has the lowest energy?

Accepted Answer

The one closest to the nucleus

Question 12

How many electrons can the first electron shell store

Accepted Answer

2

Question 13

How many electrons can each of the rest of the electron shells store

Accepted Answer

8

Question 14

What is another name for the outermost electron shell

Accepted Answer

Valence shell with the electrons in it being valence electrons

Question 15

Under what condition is an atom reactive?

Accepted Answer

When the valence shell is not full

Question 16

What is the name for atoms which are not reactive?

Accepted Answer

Noble gases

Question 17

If an atom has 11 electrons, what is its electronic configuration

Accepted Answer

2,8,1

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