Which match is not incorrect ?
$CsI_3 \Rightarrow C{s^ + },3{I^ - }$
$TiC{l_3} \Rightarrow T{l ^{ + 1}},Cl _3^ - $
${\text{GaC}}{{\text{l}}_3} \Rightarrow G{a^{ + 1}},Cl_3^ - $
${\text{InC}}{{\text{l}}_3} \Rightarrow \operatorname{I} {n^{ + 3}},3C{l^ - }$
$N{a_2}{B_4}{O_7}.10{H_2}O \xrightarrow{\Delta } X + NaB{O_2} + {H_2}O$
$X + C{r_2}{O_3}\xrightarrow{\Delta }Y$ (Green coloured)
$X$ and $Y$ are
Aluminum dissolves in mineral acids and aqueous alkalis and thus shows amphoteric character. A piece of aluminum foil is treated with dilute hydrochloric acid or dilute sodium hydroxide solution in a test tube and on bringing a burning match stick near the mouth of the test tube, a pop sound indicates the evolution of hydrogen gas. The same activity when performed with concentrated nitric acid, reaction doesn't proceed. Explain the reason.
Assertion : Atomic radius of gallium is higher than that of aluminium
Reason : The presence of additional $d-$ electron offer poor screening effect for the outer electrons from increased nuclear charge.
Which of the following sublimes on heating?
Which of the following mineral does not contain aluminium?