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Question

Which of the following elements does not form peroxide?

A
Sr
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B
Na
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C
Na,K
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D
Li,Rb
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Solution

The correct option is C Sr
  • Peroxide, any of a class of chemical compounds in which two oxygen atoms are linked together by a single covalent bond. Several organic and inorganic peroxides are useful as bleaching agents, as initiators of polymerization reactions, and in the preparation of hydrogen peroxide (q.v.) and other oxygen compounds.
  • Generally Alkali metals form peroxides in periodic table and hence option A is correct answer.

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