Question

Select correct statements and choose the correct code out of the following.

I. o - I - F C - CH₃ angle in (CH₃) C = CH₂ is smaller and the CH₃ - C = CH₂ angle is larger than trigonal (120°).

II. O - I - F angle is less than 90° (89°) in IOF^-₄ .

III. In SeOCl , Cl  - Se - Cl angle is less than the Cl - Se - o angle.

IV. POCl₃ is tetrahedral with a double bond between P and O, there is no lone pair on central atom.

(a) I and II are correct. 

(b) II and III are correct 

(c) I, II and III are correct 

(d) All are correct

Answer 1

Correct option: (d) All are correct

This is due to larger space occupied by τ electron cloud which pushes both C - CH₃ to reduce CH₃ - C - CH₃ bond angle.

● O - I - F bond angle is also less than 90° in IOF^-₄ due to lone pair on I-atom.

● SeOCl₂ has CI - Se - CI bond angle less than CI - Se -O due to τ- electron.

● POCl₃ has tetrahedral structure due to presence of τ-bond.