The three elements X, Y and Z with electronic configurations shown below all form hydrides:
Element Electronic configuration
X 1s²2s²2p²
Y 1s²2s²2p⁶3s¹
Z 1s²2s²2p⁶3s²3p⁶3d¹⁰ 4s² 4p⁵
Which set of properties match correctly with properties of the hydrides of these elements:

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Hydride of X Hydride of Y Hydride of Z
Non-polar compound Silver/grey ionic solid Forms when water is
reacts with Cl₂ in light with formulaYH₂ added to phosphorus and
elemental Z.

Hydride of X Hydride of Y Hydride of Z
Colourless gas which Silver/grey solid which Colourless, corrosive
burns with air reacts violently with liquid at STP
acids

Hydride of X Hydride of Y Hydride of Z
Colourless gas insoluble Silver/grey solid reacts Colourless gas forms a
in H₂O with H₂O to form an strong acid in H₂O
alkali

Hydride of X Hydride of Y Hydride of Z
Colourless liquid, no Silver/grey solid forms Ionic solid with formula
reaction with H₂O H₂ and H₂O ZH

answer is A.

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