F < He > Mg > N > O

He > F > N > O > Mg

He > O > F > N > Mg

N > F > He > O > Mg

The properties of elements are a periodic function of their atomic numbers.

Non metallic elements are less in number than metallic elements.

The first IEs of elements along a period do not vary in a regular manner with increase in Z.

For transition elements, the d subshells are filled with electrons monotonically with increase in Z.

Zr and Hf have about the same radius

Zr and Y have about the same radius

Zn and Nb have same oxidation state

Zr and Zn have same oxidation state

F < S < P < B

P < S < B < F

B < P < S < F

B < S < P < F

8.51 x 10⁵ J⁄mol

6.56 x 10⁵ J⁄mol

7.56 x 10⁵ J⁄mol

9.84 x 10⁵ J⁄mol