Chemistry - CHEMICAL BONDING Question with Solution | TestHub
Number of CORRECT order(s) against the mentioned characteristic among the following. (i) (IE) (ii) (Solubility) (iii) (E.A.) (iv) (v) (Bond order) (vi) (Acidic strength) (vii) (%p character in bond) (viii) (Acidic strength)
Answer:
Solution:
The total number of correct orders is 5 (statements ii, iii, iv, vi, and vii).
(ii), (iii) & (vi) are correct: NaCl is more soluble than KCl due to higher hydration energy; Cl has a higher electron affinity than F because of less inter-electronic repulsion; MnO₂ (+4 state) is more acidic than FeO (+2 state) due to higher oxidation potential.
(iv) is correct: The F-S-F bond angle in SO₂F₂ () is larger than in SOF₂ () because the lone pair in SOF₂ exerts stronger repulsion.
(vii) is correct: By Drago's rule, AsH₃ does not undergo hybridization and uses nearly pure p-orbitals ( p-character) for bonding, which is greater than the p-character in NH₃.
Incorrect statements: (i) should be (IE), (v) should be (both have a bond order of 2.5), and (viii) should be SiH₃OH > CH₃OH because back-bonding increases the acidity of silanol.
