Write electronic configuration of first 30 elements in their sub shell

asked Oct 3, 2022 148k views

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Answer:

Helium (He) 1s2

Lithium (Li) [He] 2s1

Beryllium (Be) [He] 2s2

Boron (B) [He] 2s2 2p1

Step-by-step explanation:

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Alcoholiday answered Oct 8, 2022

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