How many electrons does sodium gain or lose to become stable like the group 18 elements?

What happens when light is scattered?

What is the molar mass of a gas that has density of 2.054 g/l

#7 how does the structure of amino acids allow them to form a polypeptide? each amino acid has an amino group and a carboxyl group. each amino acid has a hydrogen atom and a carboxyl group. each amino acid has a carboxyl group and an r group. each amino acid has an r group and a hydrogen atom.