Chemistry - GENERAL CHEMISTRY Question with Solution | TestHub

ChemistryGENERAL CHEMISTRYElectronic ConfigurationHard2 minPYQ_2019

ChemistryHardsingle choice

Assertion : The free gaseous $Cr$ atom has six unpaired electrons. Reason : Half-filled $s$ -orbital has greater stability.

Answer:

Solution:

The $3 d$ -subshell in case of Cr gets exactly half-filled with configuration $3 d^{5} 4 s^{1}$ which imparts stability to the atom.

Stream:AIIMSSubject:ChemistryTopic:GENERAL CHEMISTRYSubtopic:Electronic Configuration

⏱ 2mℹ️ Source: PYQ_2019

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