Question

Identify the halogens in the modern periodic table from the given electronic configuration

a) 2,8,7 : 2,8,2 :: 2,8,2
b) 2,8,7:: 2,7:: 2,8,18,7
c) 2,8,1 :: 2,8,1 :: 2,8,1
d) 2,8,6 :: 2,6,: 2,8,5​

Answer 1

Answer:

b)2,8,7::2,7::2,8,18,7 is the correct answer

Explanation:

because halogens are the element which constitute the group 17 of the periodic table

and in ur option b it include cl,F,Br

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