Question

Describe how hund's rule of maximum spin multiplicity explains the electronic configuration of chromium with atomic number 24

Answer 1

electronic configuration in ground state is 1s2 2s2 2p6 3s2 3p6 4s1 3d5. Chromium atom by losing 3 electrons form Cr3+ ions. A chromium atom contains 17% more neutron than the protons.

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Answer 2

Explanation:

HUNDS RULE OF MAXIMUM MULTIPLICITY

This states that

The pairing of electrons in the orbital of a particular sub shell (p,d or f) does not take place until all the orbitals of the sub shell are singly occupied. Moreover the singly occupied orbital must have the electrons with parallel spins.

ELECTRONIC CONFIGURATION OF CHROMIUM

EXPECTED CONFIGURATION =1S²,2S²,2P⁶,3S²,3P⁶,3D⁴,4S²

ACTUAL CONFIGURATION =1S²,2S²,2P⁶ ,3S²,3P⁶,3D⁵,4S¹

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