Question

an element x has mass number 35 and the number of neutrons is 18 . identify the group number and period of x.

Answer 1

group no 7 and name of element is chlorine

Answer 2

Chlorine is the name of atom
Electron = mass no.-neutron
= 35-18
= 17
And chlorine have 17 electrons .
And
Chlorine is in group 17 of periodic table, also called the halogens, and is not found as the element in nature - only as a compound
And
It has 3rd period in periodic table


Thanks