Verified Solution • 2025–26 Session moderate

QJEEM21Ch8996: JEE Main 2021 Chemistry - Class 11 JEEM21Ch8996 Solution: Given below are two statements : one is labelled as Assertion…

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Barium carbonate is insoluble in water and is highly stable.

Reason (R) : The thermal stability of the carbonates increases with increasing cationic size.

Multiple Choice Options

  • A Both (A) and (R) are true and (R) is the true explanation of (A)
  • B (A) is true but (R) is false
  • C Both (A) and (R) are true but (R) is not the true explanation of (A)
  • D (A) is false but (R) is true.

Step-by-Step Verified Solution

In IIA group on moving down the group size of cation increases and show thermal stability of carbonate increases.

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