Question

1. Arrange the following elements in the increasing order of the property mentioned in bracket. i. Si, Be, Mg, Na, P (metallic character ) ii. B, Al, C ,Si , O ( atomic radius ) iii. Be, N, Li, B, O ( first ionization enthalpy ) Justify your answer.

Answer 1

Answer:

Arrange the following elements in the increasing order of their metallic character: Si, Be, Mg, Na, P. Metallic character increases down a group and decreases along a period as we move from left to right. Hence the order of increasing metallic character is P < Si < Be < Mg < Na.

Answer 2

Explanation:

Arrange the following elements in increasing order of their atomic radii ; Mg, Si, Al,p