State the number of atoms present in each of the following chemical species.
a) `CO_(3)^(2-)`
`PO_(4)^(3-)`
c) `P_(2)O_(5)`
d) CO

(i) State the formula and name the conjugate base of each of the following species : (a) H_(3)O^(+) (b) HSO_(4)^(-) (C ) NH_(4)^(+) (d) HF (e ) CH_(3)COOH (f) CH_(3)NH_(3)^(+) (g) H_(3)PO_(4)(h)H_(2)PO_(4)^(-). (ii) State the formula and name the conjugate acid of each of the following species : (a) OH^(-) (b) HPO_(4)^(2-) (C) H_(2)PO_(4)^(-) (d) CH_(3)NH_(2) (e) CO_(3)^(2-) (f) NH_(3)(g) CH_(3)COO^(-) (h) HS^(-)

Assign oxidation number of P in the following species. H_3PO_4

Predict the state of hybridisation of the central atom and the shape of each of the following species: BF_(3),SiF_(4),NO_(3)^(-),CH_(3)^(+),SOCl_(2),PO_(4)^(3-),PC l_(6)^(-),IC l_(4)^(-) .

The number of oxygen atoms present in 24.5 gm of H_(3)PO_(4) is equal to (P = 31)

The number of oxygen atoms present in 24.5 gm of H_(3)PO_(4) is equal to (P = 31)