Science, asked by malivinld79, 5 months ago

Atomic number of an element Y is 17.

a) Write its electronic configuration.

b) What is the number of valence electrons in Y

Answers

Answered by MentorMayank

5

Answer:

a. 2,8,7

b. 1

Hope it will help u to get good marks...

Answered by TrAnSLIMit

2

Explanation:

a). Chlorine (Cl - 17) has an electronic configuration as 1s2 2s2 2p6 3s2 3p6.

b). Valency of chlorine is 1.

HOPE it will HELP you✌️

PLEASE mark the answer as BRAINLIEST. ✍️

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