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JIPMER2012Chemistrys Block Elements

Which of the following metal carbonates decomposes on heating?

Options

  1. AMgCO ₃
  2. BNa ₂ CO ₃
  3. CK ₂ CO ₃
  4. DRb ₂ CO ₃

Correct answer

A. MgCO ₃

Step-by-step solution

MgCO ₃ decomposes on heating to give MgO and CO ₂ while alkali metal carbonates (except Li ₂ CO ₃ ) do not.

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