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JEE Main2018Chemistryd and f Block ElementsActual

When X O 2 is fused with an alkali metal hydroxide in presence of an oxidizing agent such as KNO 3 ; a dark green product is formed which disproportionate in acidic solution to afford a dark purple solution. X is:

Options

  1. AM n
  2. BC r
  3. CV
  4. DT i

Correct answer

A. M n

Step-by-step solution

When XO 2 is fused with an alkali metal hydroxide in presence of an oxidizing agent such as KNO 3 ; a dark green product is formed which disproportionate in acidic solution to afford a dark purple solution. X is Mn

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