Identify the incorrect order against the prop | vedclass

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Question

(C) $1$. Thermal stability of alkaline earth metal carbonates increases down the group as the electropositive character increases: $BeCO_3 < MgCO_3 <

Vedclass · Accepted Answer

$Li_2CO_3 < Na_2CO_3 < K_2CO_3 < Rb_2CO_3$ (Thermal stability)

Vedclass · Answer

(C) $1$. Thermal stability of alkaline earth metal carbonates increases down the group as the electropositive character increases: $BeCO_3 $2$. Solubility of alkaline earth metal sulfates decreases down the group due to the decrease in hydration energy: $BeSO_4 > MgSO_4 > CaSO_4 > SrSO_4$. Thus, option $B$ is correct.$3$. Thermal stability of alkali metal carbonates increases down the group: $Li_2CO_3  Na_2CO_3 > K_2CO_3 > Rb_2CO_3)$ is incorrect.$4$. Solubility of carbonates of alkaline earth metals decreases down the group: $BeCO_3 > MgCO_3 > CaCO_3 > SrCO_3$. Thus, option $D$ is correct.

column-$I$	column-$II$
$a$. $Ra$	$p$. Aeroplane industry
$b$. $K$	$q$. Down cell
$c$. $Li$	$r$. Photo electric cell
$d$. $Na$	$s$. Radioactive

Identify the incorrect order against the property given in brackets.

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Match column-$I$ with column-$II$ :

column-$I$ column-$II$

$a$. $Ra$ $p$. Aeroplane industry

$b$. $K$ $q$. Down cell

$c$. $Li$ $r$. Photo electric cell

$d$. $Na$ $s$. Radioactive

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