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Write the electronic configuration of the following and report the number of unpaired electron in each
a. `Mn^(2+)` b.`Cr^(2+)` c`Fe^(2+)` d.`Ni^(2+)` e.`CI^(2+)` f.`Zn^(2+)` g.`Fe^(2+)` h`Na` i.`Mg` .j`Cr(3+)`

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Electronic configuration Number of ampaired electron
a. `_(23) Mn^(4+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5) 3`
b.`_(24) Cr^(2+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(6) 4`
c.`_(26) Fe^(3+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5) 5`
d.`_(28) Ni^(2+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5) 2`
e.`_(17) Ci^(0 ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6) 0`
f.`_(30) Zn^(2+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10) 0`
g.`_(26) Fe^(2+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(6) 4`
h.`_(17) Na^(4+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(2) 1`
i.`_(12) Mg^(4+ ) 1s^(2)2s^(2)2p^(6)3s^(2) 0`
j.`_(24) Cr^(4+ ) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(5) 3`

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