Chapter 5: Atomic Structure

Question 1

What are atoms made up of and what the nucleus consist

Answer 1

Atom is made up of neutrons, protons and electrons
The nucleus contain neutrons and protons (electrically neutral)

Question 2

What is the relative charge and mass of neutron, proton, electron

Answer 2

Relative charge:
1. Neutron : 0
2. Proton: 1+
3. Electron: 1-

Relative mass:
1. Neutron: 1
2. Proton: 1
3. Electron: 1/1840

Question 3

What is the other term for proton number ad nucleon number

Answer 3

Atomic number and mass number

Question 4

Define isotopes

Answer 4

Isotopes are atoms of the same elements with the same number of protons but different number of neutrons

Question 5

State the electronic structure

Answer 5

2.8.8.2

Question 6

What does group number and period number tells

Answer 6

Group no. = Valence electron
Period no. = Occupied shells