The arrangement of the electrons in an atom

3 marks · Easy

Answer the following questions about the Periodic Table.

(a)

State the name given to the vertical columns in the Periodic Table.

[1 mark]

(b)

State the name given to the horizontal rows in the Periodic Table.

[1 mark]

(c)

Give the total number of periods in the modern Periodic Table.

[1 mark]

Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.

Show answer

(a) Groups

(b) Periods

Also accept: Periods: 7

Common mistakes: Mixing up groups and periods

Show mark scheme and worked solution

Marking points

B1 (a) · 1 mark · States 'groups'.

B1 (b) · 1 mark · States 'periods'.

B1 (c) · 1 mark · States number of periods: 7.

Worked solution

a) Groups

b) Periods

c) There are 7 periods in the modern Periodic Table.