Arrange these elements according to atomic radius.

Question

from largest to smallest radius

Pb

Ge

Si

Sn

C

Answer 1

Hi Ariel,

In the Mendelev's periodic table the elements are arranged in rows and columns. When you go down the column, where these elements are listed down the same column, you will notice that atomic radius increases due to increase in the number of electron shells. So the distance between the nucleus and the outer valence shell increases as you go down a column.

The order of largest to smallest would be

Pb=82,

Sn=50

Ge=32

Si=14

C=6.

Hope it is clear to you.

Thank you,

Geetha