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Introduction to d and f Block Elements

Which of the ...

Question

Which of the following commonly forms an ionic compounds as a $- 1$ anion?

A

C

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B

N

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C

O

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D

F e

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E

N e

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Solution

The correct option is C $F e$
${N a}_{2} O$ is an ionic compound
${N a}^{2 +} O^{2 -} \to$ Oxygen is forming ionic compound as an anion.

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