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The p-Block Elements
Question
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Give appropriate reason for the following observation:
NO2 readily forms a dimer, whereas ClO2 does not.

Answer

NO2 forms dimer due to presence of odd electrons where ClO2, does not form dimer because due to the reason that odd electron is delocalized as it is involved in p(pi)-d(pi) bonding.

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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.