Which of the following metal carbonates decom | vedclass

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(B) Most alkali metal carbonates are thermally stable and do not decompose upon heating. However,$Li_2CO_3$ is an exception due to the small size of t

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$Li_2CO_3$

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(B) Most alkali metal carbonates are thermally stable and do not decompose upon heating. However,$Li_2CO_3$ is an exception due to the small size of the $Li^+$ ion,which leads to high polarizing power and instability of the carbonate ion. $Li_2CO_3$ decomposes upon heating as follows: $Li_2CO_3 \rightarrow Li_2O + CO_2$ Other alkali metal carbonates like $Na_2CO_3$,$K_2CO_3$,and $Cs_2CO_3$ are thermally stable and do not decompose at ordinary heating temperatures.

Metals	Flame color
$1$. $Li$	$a$. Crimson red
$2$. $K$	$b$. Violet
$3$. $Rb$	$c$. Red-violet
$4$. $Cs$	$d$. Blue

Which of the following metal carbonates decomposes upon heating?

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Metals Flame color

$1$. $Li$ $a$. Crimson red

$2$. $K$ $b$. Violet

$3$. $Rb$ $c$. Red-violet

$4$. $Cs$ $d$. Blue

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Which of the following alkali metals has a density greater than water?

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