JEE CHEMISTRY MCQ: P-BLOCK ELEMENTS

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The hydrides of the first elements in groups 15-17 namely

\mathrm{NH}_3, \mathrm{H}_2 \mathrm{O}

and

\mathrm{HF}

respectively shows abnormally high values for melting and boiling points. This is due to

View answer and explanation

Correct option: B

the ability to form extensive intermolecular

\mathrm{H}

-bonding

Option B (the ability to form extensive intermolecular

\mathrm{H}

-bonding) is correct because the high melting and boiling points are due to the strong intermolecular hydrogen bonds in

\mathrm{NH}_3, \mathrm{H}_2 \mathrm{O}

and

\mathrm{HF}

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17^{\text {th }}

{O}_2

{O}_2

\mathrm{C}{\mathrm{N}^ - }

{\mathrm{N}_2}

\mathrm{C}{\mathrm{N}^ - },\mathrm{\;}{\mathrm{N}_2}

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{H}_2 {~S}_2 {O}_8

{S}={O}

{S}-{OH}

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{H}_2 {SO}_4