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JEE Main20257 Apr 2025Evening ShiftChemistryd and f Block ElementsActual

' X ' is the number of acidic oxides among VO ₂ , V ₂ O ₃, CrO ₃, ~V ₂ O ₅ and Mn ₂ O ₇ . The primary valency of cobalt in [ Co ( H ₂ NCH ₂ CH ₂ NH ₂ )₃ ]₂ ( SO ₄ )₃ is Y. The value of X + Y is :

Options

  1. A5
  2. B4
  3. C2
  4. D3

Correct answer

A. 5

Step-by-step solution

aligned & CrO ₃= Acidic & Mn ₂ O ₇= Acidic & x =2 aligned aligned & Primary valency =3 & x + y =5 aligned

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