Question

You are given an element 168X. Find out:
(a) Number of protons, electrons and neutrons in ‘X’
(b) Valency of ‘X’
(c) Write the chemical formula of the compound formed when ‘X’ reacts with :
(1) hydrogen, and (2) 
​

Answer 1

Answer:

protons= electron= neutron=8(oxygen)

valency=2

H2O