Question

Electronic configuration of elements A,B,C,D are given.
A = 2,7
B = 2,8,1
C = 2,8,8
D = 2,8.7
a) Which among the above is a noble gas
?
b)Which of the elements belong to the same group ?​
c)which of the elements belongs to the same period?​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer :-

a) C = 2,8,8 = Argon

b) A = 2,7 = Fluorine

D = 2,8,7 = Chlorine

c) B = 2,8,1 = Sodium

C = 2,8,8 = Argon

D = 2,8,7 = Chlorine

Hope it will help you dear....

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