MCQ
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
- ✓
hydried of $X$ hydried of $Y$ hydried of $Z$ $(a)$ hydride of $X$ colourless gas insoluble in $H_2O$
Silver/grey solid reacts with $H_2O$ to from an alkali colourless gas forms a strong acid in $H_2O$ - B
Hydride of $X$ Hydride of $Y$ Hydride of $Z$ $(b)$ Colourless liquid, no reaction with $H_2O$ Silver/grey solid forms $H_2$ and $H_2O$ Ionic solid with formula $ZH$ - C
Hydride of $X$ Hydride of $Y$ Hydride of $Z$ $(c)$ Non-polar compound reacts with $Cl_2$ in light Silver/grey ionic solid with formula $YH_2$ Forms when water is added to phosphorus and elemental $Z$. - D
Hydride of $X$ Hydride of $Y$ Hydride of $Z$ $(d)$ Colourless gas which burns which air Silver/grey solid which reacts violently with acids Colourless, corrosive liquid at $STP$
