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:

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2. As the alkaline earth metals (except Be) tend to lose their valence electrons
3. The dark blue colour of the solution formed when excess of ammonia is added
4. preservative among the following is
5. When alkyl halide is heated, with dry Ag₂O, it produces

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

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