Final answer:
The molecule with covalent bonding among the options provided is c) H2Se, where hydrogen and selenium atoms share electrons, forming a covalent bond.
Step-by-step explanation:
The molecule with covalent bonding among the options provided is c) H2Se. Covalent bonding occurs when atoms share electrons to achieve stability and complete their outer electron shells. Hydrogen selenide (H2Se) involves the sharing of electrons between hydrogen and selenium atoms, making it a covalent bond. KBr (potassium bromide) is ionic as it consists of a metal (potassium) and a nonmetal (bromine). Elemental potassium (K) forms metallic bonds in its solid form, and neon (Ne) is a noble gas that does not usually form bonds.