#1.28
Explain how a covalent bond is formed when a pair of electrons is shared between two atoms
#1.29
Recall that covalent bonding results in the formation of molecules
#1.30
Recall the typical size (order of magnitude) of atoms and small molecules
#1.31
Explain the formation of simple molecular, covalent substances, using dot and cross diagrams, including:
a) hydrogen
b) hydrogen chloride
c) water
d) methane
e) oxygen
f) carbon dioxide