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p Block Elements

Section: Chemistry

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Question : 57

Total: 60

There are some deposits of nitrates and phosphates in earth’s crust. Nitrates are more soluble in water. Nitrates are difficult to reduce under the laboratory conditions but microbes do it easily. Ammonia forms larger number of complexes with transition metal ions. Hybridisation easily explains the ease of sigma donation capability of NH3 and PH3. Phosphine is a flammable gas and is prepared from white phosphorus.

White phosphorus on reaction with NaOH gives PH3 as one of the products. This is a

[JEE Adv 2008 P1]

dimerisation reaction.
disproportionation reaction.
condensation reaction.
precipitation reaction.

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