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The correct order of increasing thermal ...

The correct order of increasing thermal stability of `K_(2)CO_(3),MgCO_(3),CaCO_(3),` and `BeCO_(3)` is

A

`BeCO_(3)ltMgCO_(3)ltCaCO_(3)ltK_(2)CO_(3)`

B

`K_(2)CO_(3)ltMgCO_(3)ltCaCO_(3)ltBeCO_(3)`

C

`MgCO_(3)ltBeCO_(3)ltCaCO_(3)ltK_(2)CO_(3)`

D

`BeCO_(3)ltMgCO_(3)ltK_(2)CO_(3)ltCaCO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
a
As the basicly of metal hydroxide increases down the group, thermal stability of their carbonates increases in the same order. As we know, group 1 compounds are more stable than group 2 compounds. Hence, correct order is
`BeCO_(3)ltMgCO_(3)ltCaCO_(3)ltK_(2)CO_(3)`
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