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| 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
$A$, (molecular formula $\left.\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{2}\right)$ with a straight chain structure gives a $C_{4}$ carboxylic acid. $A$ is :
$A \frac{{Li} {A} {H} {H}_{4}}{{H}_{3} {O}^{+}} \longrightarrow B \stackrel{\text { Oxidation }}{\longrightarrow} {C}_{4}-$ carboxylic acid