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Question
Chemistry
Among the carbonates of alkali metals which one has highest thermal stability?
Q. Among the carbonates of alkali metals which one has highest thermal stability?
1646
235
NTA Abhyas
NTA Abhyas 2020
The s-Block Elements
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A
C
s
2
C
O
3
81%
B
R
b
2
C
O
3
8%
C
K
2
C
O
3
12%
D
N
a
2
C
O
3
0%
Solution:
On moving down the group thermal stability of alkali metal carbonate increases so
C
s
2
C
O
3
is most stable here.
C
s
2
C
O
3
>
R
b
2
C
O
3
>
K
2
C
O
3
>
N
a
2
C
O
3