Which of the following order can't be explained by back bonding ? - Vidyadip

MCQ

Which of the following order can't be explained by back bonding ?

A
$SiH_3OH > CH_3OH$ (Acidic strength)
B
$O(SiH_3)_2 < O(CH_3)_2$ (Lewis basic strength)
C
$BF_3 < BCl_3$ (Lewis acidic strength)
✓
$PH_4^+ > NH_3$ (Bond angle)

✓

Answer

Correct option: D.

$PH_4^+ > NH_3$ (Bond angle)

d
$PH_4^+ > NH_3$ No. $B.B.$ concept applicable
$B.A.\Rightarrow 109.5^o > 107^o$

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