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The p-Block Elements
Question
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What type of hybridisation is associated with N in NH3? What is the expected bond angle in NH3?

Answer

NH3 is Sp3 hybirdisation as there are three bonding pairs of electrons and one non bonding pair. The bond angle in a molecule of ammonia are 107o, a value very close to tetrahedral angle (109o.5').
The central atom has both shared and unshared electron pairs. The shape of ammonia molecule (NH3) is trigonal pyramid.

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Some More Questions From The p-Block Elements Chapter

Why are pentahalides more covalent than trihalides?

Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?

Why is N2 less reactive at room temperature?

Mention the conditions required to maximise the yield of ammonia.

What is the covalency of nitrogen in N2O5?

Bond angle in PH4+ is higher than that in PH3. Why?

Write a balanced equation for the hydrolytic reactions PCl5 in heavy water.