KVPY SX SB Exam 05-Nov-2017 Question Paper

Question : 48 of 120

Marks: +1, -0

The thermal stability of alkaline earth metal carbonates–

MgCO_3, CaCO_3, SrCO_3

and

BaCO_3

, follows the order

Solution:

Thermal stability of polyvalent anion salt like

CO_3^{2–}

increase down the group due to increase in ionic character

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