Which chemical bonds involve electrons being shared among two or more atoms?

covalent and metallic bonds

Explanation:

Electrons are shared among atoms in both covalent bonds and metallic bonds, but not ionic bonds. Covalent bonds hold atoms together in molecules. Metallic bonds hold together a sample of pure metal or a mixture of metals.

quartz

explanation:

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6