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NEETChemistrys Block Elements

What causes alkali metals to tarnish in dry air?

Options

  1. AFormation of nitrides
  2. BFormation of hydroxides
  3. CFormation of peroxides
  4. DFormation of superoxides

Correct answer

B. Formation of hydroxides

Step-by-step solution

Alkali metals tarnish in dry air due to the formation of their oxides, which subsequently react with moisture in the air to form hydroxides.

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