Question 1: Give the numbers of protons and electrons in each of the following: (a) Na+, (b) Ca2+, (c) Al3+, (d) I, (e) O2, (f) N3, and (g) He.
Question 2: Write the molecular formula of glycine, an amino acid present in proteins.
Carbon = 2 atoms
Hydrogen = 5 atoms
Nitrogen = 1 atom
Oxygen = 2 atoms.
Question 3: Which of the following compounds are likely to be ionic? Which are likely to be molecular? (a) SiCl4, (b) LiF, (c) BaCl2, (d) B2H6, (e) KCl, and (f) C2H4