An element x has mass 35 and number of neutrons 18 write its atomic number and electron configuration also write group number periodic number and valency of x
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2
Explanation:
Chlorine
Atomic number :17
Electronic configuration: 2,8,7
Valency :-1
Group: 17th
Period: 3rd
Answered by
1
Answer:
We know :
Atomic number = Mass number - No. of neutrons.
Atomic number = 35 - 18
= > 17
Electronic configuration :
2 , 8 , 7
Group no. = 17
Period no. = 3
Name of element is Chlorine ( Cl ) .
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