Question

16. A brief information about two atoms. X and Y is given, X: Atomic number = 7, Mass number = 14 Y: Atomic number = 7, Mass number - 15 Which of the following is correct about these two atoms a) Electronic configural of X is 2,8, 4, while that of Y is 2, 8,5 b) Both X and Y contain 7 neutrons: c) X has 2 electron shells while Y has 3 electron shells d) Both X and Y have 5 valence electrons.​

Answer 1

Answer:

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Explanation:

D) both X and Y have 5 valence electrons