Chemistry - Complete P-block Question with Solution | TestHub

ChemistryComplete P-blockp-Block 15,16Easy2 minPYQ_2020

ChemistryEasysingle choice

A gaseous compound of nitrogen and oxygen is paramagnetic in nature. When it is cooled below $0 ° C$ its molecular mass increases and paramagnetism is lost. The behaviour is reversed on heating. The compound is

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Answer:

Solution:

$N O_{2}$ is paramagnetic because of unpaired electron. On cooling $N O_{2}$ below $0 ° C$ , it dimerises to $N_{2} O_{4}$ which does not have any unpaired electrons. Hence, no paramagnetism is show by the dimer, $N_{2} O_{4}$ .

Stream:NTA_ABHYASSubject:ChemistryTopic:Complete P-blockSubtopic:p-Block 15,16

⏱ 2mℹ️ Source: PYQ_2020

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