Question

Which of the following is/are correct matches?
(Trend) (Characteristic/Property)

Answer 1

(A) The correct order of thermal stability of alkali metal nitrates is as shown below.
$NaN{O}_3>KN{O}_3>RbN{O}_3$
Thermal stability of nitrates of alkali metals decreases down the group.
(B) The correct order of basic nature of metal oxides is as shown below.
$MgO>SnO>B_2{O}_3$
MgO is basic; SnO is amphoteric and $B_2{O}_3$ is acidic oxide.
(C) The correct order of the solubility in $H_{2}O$ for alkali metal bicarbonates is as shown below.
$NaHC{O}_3<KHC{O}_3<RbHC{O}_3$
(D) The correct order for the melting point of aluminium halides is as shown below.
$Al{F}_3>AlC{l}_3>AlB{r}_3$