A: An electron revolving around the nucleus d | vedclass

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Question

(B) is true because,according to Bohr's model,electrons revolve in stationary orbits with fixed energy,preventing them from falling into the nucleus.$

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$A$ and $R$ are both true,but $R$ is not the correct explanation of $A$.

Vedclass · Answer

(B) is true because,according to Bohr's model,electrons revolve in stationary orbits with fixed energy,preventing them from falling into the nucleus.$R$ is true because electrons in these stationary states are indeed referred to as orbital electrons.However,the fact that it is an orbital electron is not the direct physical explanation for why it does not fall into the nucleus (the explanation lies in the quantization of angular momentum and stationary states).Therefore,both are true,but $R$ is not the correct explanation of $A$.

$A$: An electron revolving around the nucleus does not fall into the nucleus.
$R$: An electron revolving around the nucleus is an orbital electron.

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$A$: An electron revolving around the nucleus does not fall into the nucleus.$R$: An electron revolving around the nucleus is an orbital electron.