C2.2.2 Electronic Structures

Question 1

What is a group?

Answer 1

A vertical column on the periodic table

Question 2

What is a period?

Answer 2

A horizontal row on the periodic table

Question 3

Write down the number of elements for the first four periods:

Answer 3

1- 2
2- 8
3-8
4-18

Question 4

What does the electronic structure of an atom show?

Answer 4

Shows how the electrons are arranged in atoms

Question 5

What is the outer shell?

Answer 5

The outermost occupied shell in an atom

Question 6

State the electronic structure of oxygen:

Answer 6

2.6

Question 7

State the electronic structure of magnesium

Answer 7

2.8.2

Question 8

How is electronic structure related to the periodic table? (3)

Answer 8

• the number of numbers equals the period number
• the sum of numbers equals the atomic number
• the last number matches the group number

Question 9

What is nitrogen’s electron configuration?

Answer 9

2.5

Question 10

Write down aluminiums electron configuration

Answer 10

2.8.3

Question 11

Write down chlorines electron configuration

Answer 11

2.8.7