Question

what is the electronic configuration of the element in in the third period which gains one electron to change into an anion?

Answer 1

Answer:

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(v) 8 electrons are present in the valence shell of the element with atomic number 18. (vi) Electron affinity. (vii) Electronic configuration of element in the third period which gains one electron to become an anion is 2, 8, 7.

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Answer 2

Answer:

1)8 electron are present in the valance shell of the element with atomic number 18

2)electron affinity

3)electronic configuration of element in the third period which gain one electron to become an anion is 2,8,

7....