Question

-5 sens!
Mention any two anomalous properties of second period elements,​

Answer 1

Answer:

High electronegativity. Large charge/radius ratio. These elements also have only 4 valence orbitals available (2s and 2p) for bonding as compared to the 9 available (3s, 3p, and 3d) to the other members of the respective groups, so their maximum covalency is 4.

Answer 2

Answer:

High electronegativity. Large charge/radius ratio. These elements also have only 4 valence orbitals available (2s and 2p) for bonding as compared to the 9 available (3s, 3p, and 3d) to the other members of the respective groups, so their maximum covalency is 4.