In which of the following pairs of molecules/ions, the central atoms have

⇦

⇨

In which of the following pairs of molecules/ions, the central atoms have sp²-hybridisation?

Options

(a) NO₂⁻ and NH₃
(b) BF₃ and NO₂⁻
(c) NH₂⁻ and H₂O
(d) BF₃ and NH₂⁻

Correct Answer:

BF₃ and NO₂⁻

Explanation:

For sp² -hybridisation, there must be 3 σ bonds or 2 σ bonds along with a lone pair of elctrns.
NO₂⁻ ⇒ 2σ + 1/p = 3 i.e.,sp² -hybridisation
NH₃ ⇒ 3σ + 1/p = 4 i.e.,sp³ -hybridisation
BF₃ ⇒ 3σ + 0/p = 3 i.e.,sp² -hybridisation
NH₂⁻ ⇒ 2σ + 2/p = 4 i.e.,sp³ -hybridisation
H₂O ⇒ 2σ + 2/p = 4 i.e.,sp³ -hybridisation
Thus, among the given pairs, only BF₃ and NO₂⁻ have sp² -hybridisation

Related Questions:

1. The maximum number of hydrogen bonds formed by a water molecule in ice is
2. Which of the following compounds has the highest boiling point
3. Choose the correct statements
4. Diethyl ether is isomeric with
5. Which of the following complexes is used to be as an anticancer agent

Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Chemical Bonding and Molecular Structure (86)
Subject: Chemistry (2512)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends