Question

Write the electronic configuration of the first four elements in group
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Answer 1

Answer:

electronic configuration:

Hydrogen - 1    

Helium      - 2

Lithium      - 2, 1

Berrilium   - 2, 2

remember these:

First shell - max capacity = 2

Second shell - max capacity = 8

Third shell - max capacity = 8

Fourth shell - max capacity = 8

We find the electronic config using the atomic number, when we find the atomic number of elements, we divide that number so that after the first shell we put a comma and go to the second shell and then after 8 is there we go to the third and then the fourth, remember when dividing you can only go to the next shell after you have filled the previous shell.

shells are kind of like Neptune's ring which is around the elements

Hope this helped you  ^-^

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