an element "X" has mass 35 and number of neutrons, is 18 identify the group number and period of "X"
an element "X" has mass 35 and number of neutrons, is 18 identify the group number and period of "X"
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chlorine is the element
group - 17
period - 3
MARK BRAINIEST
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 ) .