JEE Advance - Chemistry (2018 - Paper 1 Offline - No. 4)
Based on the compounds of group $$15$$ elements, the correct statement(s) is (are)
$$B{i_2}{O_5}$$ is more basic than $${N_2}{O_5}$$
$$N{F_3}$$ is more covalent than $$Bi{F_3}$$
$$P{H_3}$$ boils at lower temperature than $$N{H_3}$$
The $$N-N$$ single bond is stronger than the $$P-P$$ single bond
Explanation
Option (A) : Correct. The basicity of oxides usually increases on descending a group. Therefore, Bi2O5 is more basic than N2O5.
Option (B) : Correct. Covalent nature of a molecule depends on the electronegativity difference between bonded atoms.
Option (C) : Correct. Boiling point of NH3 is more than that of PH3 due to hydrogen bonding.
Option (D) : Incorrect. P$$-$$P single bond is stronger than N$$-$$N single bond. This is due to the fact that N is small in size, due to smaller size of atoms lone pair of repulsion will be more.
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