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NTA Abhyas JEE Main2020Chemistrys Block ElementsPractice

A metal on combustion in excess air forms X. X upon hydrolysis with water yields H 2 O 2 and O 2 along with another product the metal is

Options

  1. ALi
  2. BNa
  3. CRb
  4. DMg

Correct answer

C. Rb

Step-by-step solution

It is Rb and the reactions are as follows R b + O 2 → R b O 2 ' X ' 2 R b O 2 + 2 H 2 O → 2 R b O H + H 2 O 2 + O 2

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