write the electronic configuration of hydrogen z=1, helium z=2, Neon = 10
write the electronic configuration for chromium and mention the reason d5 configuration
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H=1s1
He=1s2
Ne=1s2 2s2 2p6
Cr=[Ar]3d5 4s1
by transfering 1 e from 4s to 3d subshell 3d subshell acquired half filled stable configuration
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