NEETChemistryp Block Elements (Group 15, 16, 17 & 18)
Statement (A) Sulphur vapour is paramagnetic. Statement (B) Reaction of dil. HCl with finely divided iron forms FeCl ₃ and H ₂ gas. The correct answer is
Options
- AStatement (A) is correct, but (B) is wrong.
- BBoth the statements are correct.
- CStatement (A) is wrong, but (B) is correct.
- DBoth the statements are wrong.
Correct answer
A. Statement (A) is correct, but (B) is wrong.
Step-by-step solution
Statement (A) Sulphur vapour is paramagnetic is correct statement as sulphur vapour has formula S ₂ , i.e. similar to O ₂ and O ₂ has two unpaired electrons in its anti-bonding molecular orbitals. Statement (B) Reaction of HCl (dil.) with finely divided iron forms FeCl ₃ and H ₂ gas is a wrong statement as the whole reaction is as follows: Fe +2 HCl ( dil. ) FeCl ₂+ H ₂(g) The H ₂(g) produced will prevent the formation of Fe ³⁺ (i.e. FeCl ₃ ). Hence, option (1) is the correct answer.