engineering recuitment ISRO Scientific Assistant Physics 2020 General Science Chemistry Structure of Atom

मैग्नीशियम का इलेक्ट्रॉनिक विन्यास ________ है।

1
1s2, 2s2, 2p4, 3s2.
2
1s2, 2s2, 2p6, 3s1.
3
1s2, 2s2, 2p6, 3s2.
4
1s2, 2s2, 2p7, 3s2.
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