Question

You are given an element X with atomic no. 8 and mass no. 16. (a) Find out the valency of ‘X’.(b) Which has more number of electrons X or X−² and why?(c) Write the chemical formula of the compound formed when ‘X’ reacts with (i) Carbon (ii) Hydrogen

Answer 1

Explanation:

valency of element.(3) chemical formula of the compound formed when x reacts with hydrogen and oxygen..

Answer 2

The valency of the element is 2

X^-2 will have 2 more electrons i.e. 10 elctrons whereas X had only 8 electrons .