Question

1 masses of atoms of other elements are compared to the mass of hydrogen
2 determine the vacancies of h,cl,O and Na from molecular formulae H2, HCL And H2 0 , NaCL​

Answer 1

Explanation:

For H2 valence of H=-2

HCl:valence of cl= -1+X=0

=1

H2O: valence of H= X+(-2)2 =0

= x=4

NaCl: valence of Na=X+7=0

= -7