Oxygen, nitrogen, and fluorine bond with hydrogen to form molecules. these molecules are attracted to each other by

The oxygen, nitrogen, and fluorine bonds with hydrogen to produce molecules, these molecules are fascinated towards each other by hydrogen bonds.  

A hydrogen bond refers to a partially electrostatic attraction amid a hydrogen atom that is combined with a more electronegative group or atoms like oxygen, nitrogen, or fluorine. In this bonding, one is known as the hydrogen bond donor, and another atom adjacent to it exhibiting a lone pair of electrons is known as the hydrogen bond acceptor.  

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