Explain the formation of covalent bond wiyh the help of hydrogen and oxygen molecule

Answer;

The covalent bond between hydrogen and oxygen molecule is polar-covalent bond.As we know that covalent bond is formed by the mutual sharing of electron as oxygen needs two electron to complete its valence shell and hydrogen needs one electron to complete its valence shell two hydrogen atoms will form mutual bond with one oxygen atom.This picture will help you understand:

the answer for sodium is 0.186

the answer for rubidium is 0.251

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o