Question

Arrange the following according to the increasing order of covalence:Naf,Nacl,NaBr,Nal

Answer 1

Answer:

NaF<NaCl<NaBr<NaI

Explanation:

Fajan's rule states that the covalence of a compound increases if:

1. The cation gets smaller.
2. The anion gets bigger.

Here, the cation is having a constant size ($Na^{+}$), hence we will look at the size of anion. Arranging according to sizes gives the answer given. :)

Answer 2

Answer:

i dont know

Explanation: