Chemistry, asked by aliyaanil257, 1 day ago

The 3rd shell (M shell ) of an atom contains 3 electrons. the mass number is 27 a) write the atomic number of this atom. b) write the electronic configuration.​

Answers

Answered by harshurmaliya79
3

Answer:

aluminium atomic number-13

Explanation:

electronic configuration -2,8,3

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