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AIIMS2004Chemistryd and f Block Elements

The compound insoluble in water is

Options

  1. Amercurous nitrate
  2. Bmercuric nitrate
  3. Cmercurous chloride
  4. Dmercurous perchlorate.

Correct answer

C. mercurous chloride

Step-by-step solution

According to "solubility rule" following compounds are soluble in water: (i) All common group IA and NH ₄⁺ compounds. (ii) All common NO ₃⁻ (nitrate), CH ₃ COO ⁻ (acetate), ClO ₄⁻ (perchlorate) compounds (iii) All common Cl ⁻, Br ⁻, I ⁻ compounds, except those of Ag ⁺, Pb ²⁺, Cu ⁺ and Hg ₂²⁺ (mercurous) (iv) All common SO ₄ ²⁻ (sulphate) compounds, except those of Ca ²⁺, Sr ²⁺, Ba ²⁺ and Pb ²⁺ .

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