Question

Identify the period and group of the element whose atomic radius is determined with respect to non bonded forces of attraction.

• A. $IAgroup,3^{rd}period$
• B. $IIAgroup,2^{nd}period$
• C. $VIIIgroup,4^{th}period$
• D. $0group,5^{th}period$

Answer 1

The correct option is D $0group,5^{th}period$

Inert gases do not form any compounds. Therefore, the distance between two adjacent atoms is considered for the calculation of atomic radius. As two adjacent atoms are bound by non bonded forces of attraction called Van der Waal's forces, the atomic radius is called Van der Waal's radius. Inert gases belong to zero group. Hence, option D is correct as it is the only matching option.