The correct increasing order of extent of hydrolysis is

Assertion : $Pb^{4+}$ compounds are stronger oxidizing agents than $Sn^{4+}$ compounds.
Reason : The higher oxidation states for the group $14$ elements are more stable for the heavier members of the group due to 'inert pair effect'.

The hydride of phosphorus,$PH_3$,is ...

In the following reaction,identify the nature of the product formed by the complete hydrolysis of the underlined atom at $R.T$:
$H_6\underline{Si}_2O_7 + H_2O \longrightarrow H_4SiO_4$

The three elements $X$,$Y$ and $Z$ with electronic configurations shown below all form hydrides:

Element	Electronic configuration
$X$	$1s^2, 2s^2, 2p^2$
$Y$	$1s^2, 2s^2, 2p^6, 3s^1$
$Z$	$1s^2, 2s^2, 2p^6, 3s^2, 3p^6, 3d^{10}, 4s^2, 4p^5$

Which set of properties match correctly with properties of the hydrides of these elements?

Which of the following species is not stable?