Key Idea For sp2 hybridisation, there must be 3σ-bonds or 2σ-bonds along with a lone pair of electrons. (i) NO2−⇒2σ+1lp=3, ie, sp2 hybridisation (ii) NH3⇒3σ+1lp=4, ie, sp3 hybridisation (iii) BF3⇒3σ+0lp=3, ie, sp2 hybridisation (iv) NH2−⇒2σ+2lp=4, ie, sp3 hybridisation (v) H2O⇒2σ+2lp=4, ie, sp3 hybridisation Thus, among the given pairs, only BF3 and NO2− have sp2 hybridisation.
In which of the following pairs of molecules/ions, the central atoms have sp^2 hybridisation?
NEET UG 2010 — Chemistry Inorganic Chemistry
2010mcqeasy
In which of the following pairs of molecules/ions, the central atoms have sp2 hybridisation?
Official previous-year question
Held on 30 Apr 2010 · Verified 9 Jul 2026.
Options
- A
NO2−and NH3
- B
BF3 and NO2−
- C
NH2−and H2O
- D
BF3 and NH2−
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