Decreasing order of stability of O₂ , O₂⁻ , O₂⁺ and O₂²⁻ is

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Decreasing order of stability of O₂ , O₂⁻ , O₂⁺ and O₂²⁻ is

Options

(a) O₂²⁻ > O₂⁻ > O₂ >O₂⁺
(b) O₂> O₂⁺ > O₂²⁻ > O₂⁻
(c) O₂⁻ > O₂²⁻ > O₂⁺ >O₂
(d) O₂⁺ > O₂ > O₂⁻ > O₂²⁻

Correct Answer:

O₂⁺ > O₂ > O₂⁻ > O₂²⁻

Explanation:

According to molecular orbital theory as bond order decreases stability of the molecule decreases
Bond order =1/2 (N(b)-N(a))
Bond order for O₂⁺=1/2 (10-5)=2.5
Bond order for O₂=1/2 (10-6)=2
Bond order for O₂⁻=1/2 (10-7)=1.5
Bond order for O₂²⁻=1/2 (10-8)=1.0
hence the correct order is
O₂⁺ > O₂ > O₂⁻> O₂²⁻

Related Questions:

1. Which of the following gives methane on hydrolysis
2. Identify Z in the sequence of reaction
3. Which one of the following is an example of thermosetting polymer
4. An ideal gas, obeying kinetic theory of gases can not be liquefied, because
5. Neutral divalent carbon species released as reaction intermediate in reaction

Topics: Chemical Bonding and Molecular Structure (86)
Subject: Chemistry (2512)

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