Question

the third shell of an atom contain 2 electrons. Complete the subshell electronic configuration ​

Answer 1

Explanation:

18

Each shell can contain only a fixed number of electrons: The first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.

Answer 2

1st shell - 2 electrons

2nd shell -8 electrons

3rd shell- 2 electrons(according to u r question)

18 is your answer

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