Oxidation numbers of A, B, C are + 2, +5 and $$-$$2 respectively. Possible formula of compound is

For given energy, E = 3.03 $$ \times $$ 10^$$-$$19 Joules corresponding wavelength is (h = 6.626 $$ \times $$ 10^$$-$$34 J sec, c = 3 $$ \times $$ 10⁸ m/sec)

Isoelectronic species are

Which statement is wrong ?