| ⇦ | 
| ⇨ |
Four diatomic species are listed below. Identilfy the correct order in which the bond order is increasing in them:
Options
(a) NO < O₂⁻ < C₂²⁻ < He₂⁺
(b) O₂⁻ < NO < C₂²⁻ < He₂⁺
(c) C₂²⁻ < He₂⁺ < O₂⁻ < NO
(d) He₂⁺ < O₂⁻ < NO < C₂²⁻
Correct Answer:
He₂⁺ < O₂⁻ < NO < C₂²⁻
Explanation:
Bond order = Nₙ – Nₘ / 2
He₂⁺ = σ(1s)² σ*(1s) B.O. = 0.5
O₂⁻ = KKσ(2s)² σ*(2s)² σ(2pₖ)²
π(2pᵢ)² π(2pⱼ)² π*(2pᵢ)² π*(2pⱼ)¹ B.O. = 1.5
NO = KKσ(2s)² σ*(2s)²π(2pᵢ)²
π(2pⱼ)² σ(2pₖ)² π*(2pᵢ)¹ B.O. = 2.5
C₂²⁻ = KKσ(2s)² σ*(2s)²π(2pᵢ)² π(2pⱼ)² σ(2pₖ)² B.O. = 3.0
Related Questions: - Concentrated sulphuric acid is always dilute by adding
- For azimuthal quantum number l= 3,the maximum number of electrons will be
- Electronic configuration of deuterium atom is
- Which gas is formed when CaC₂ reacts with H₂O
- Which of the following compounds is known as white vitriol
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
- Concentrated sulphuric acid is always dilute by adding
- For azimuthal quantum number l= 3,the maximum number of electrons will be
- Electronic configuration of deuterium atom is
- Which gas is formed when CaC₂ reacts with H₂O
- Which of the following compounds is known as white vitriol
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
Leave a Reply