Question

An element X has mass number 35 and the number of neutrons in its atom is 18
(a) To which group of the periodic table element X belongs?
(b) To which period of periodic table element X belongs ?
(c) What will be the formula of chloride of element X belongs?

Answer 1

Here is ur answer -
The name of the element is CHLORINE.
a) It belongs to the group 17 also known as halogens.
b) It belongs to the period 3rd.
c) The formula will be Cl2.
Hope this helps :-)