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  4. The electronic configuration, which obeys Hund’s rule for the ground state of carbon atom is

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Q. The electronic configuration, which obeys Hund’s rule for the ground state of carbon atom is

KVPYKVPY 2016Structure of Atom

Solution:

According to Hund’s rule, ‘pairing of electrons in the orbitals belonging to same subshell does not take place until each orbital belonging to that subshell has got one electron each, i.e. it is singly occupied. The electronic configuration, which obeys Hund’s rule for ground state of carbon is $1s^{2}2s^{2}2p^{2}$
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