Science, asked by poonamchandercm, 8 months ago

Electronic configuration of an element is 2,8,7. The atomic number of this element is----and its symbol is ---

Answers

Answered by devrajthakur2006

16

Answer:

atomic no. 17

symbol = Ar

Answered by singhamandeep30323

22

Answer:

2,8,7 = chlorine

configuration = 1s^2 , 2s^2 , 2p^6 , 3s^2 , 3p^5

symbol = Cl

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