Chemistry - Complete P-block Question with Solution | TestHub

(A) Basicity: Tetrapolyphosphoric acid and hexametaphosphoric acid have the same number of ionizable P−OH groups; hence, their basicity is equal.

(B) Dipole moment: p-Dichlorobenzene is symmetrical, so its dipole moment is zero, while chlorobenzene has a non-zero dipole moment. Hence,

$\mu (p-Dichlorobenzene)<\mu (chlorobenzene)$

(C) P–C bond length: In PF₄(CH₃), the P atom has more electronegative F atoms, giving a shorter P–C bond than in PF₃(CH₃)₂.

(D) P–O–P linkages: P₄O₆ has 6 P–O–P linkages, while P₄O₁₀ has 6, so the stated order is incorrect.

Correct options = A, B, C