The spin-only magnetic moment value of $$B_2^ + $$ species is _____________ $$\times$$ 10^$$-$$2 BM. (Nearest integer) [Given : $$\sqrt 3 $$ = 1.73]

According to molecular orbital theory, the number of unpaired electron(s) in $$O_2^{2 - }$$ is :

The number of hydrogen bonded water molecule(s) associated with stoichiometry CuSO₄.5H₂O is ____________.

The number of species having non-pyramidal shape among the following is ___________.

(A) SO₃

(B) NO$$_3^ - $$

(C) PCl₃

(D) CO$$_3^{2 - }$$