How many single bonds can hydrogen form?

Hint: The reaction of zinc with copper (II) nitrate to form zinc nitrate and copper is an example of single displacement reaction where the one atom from the reactant displaces the other atom from the other reactant to form the product.

Complete step by step answer:
Chemical bonding is defined as the formation of bonds between the two atoms. It is the linkage between the two atoms and keeps the molecule intact.
The chemical bond can be of various types. Ionic bond and covalent bond are the type of chemical bond formed between the atoms. The ionic bonds are formed by the transfer of electrons between the two atoms. During the formation of ionic bonds, one atom gains positive charge and one atom gains negative charge. The covalent bond is formed by the mutual sharing of electrons between the atom. The single covalent bond is formed of one sigma bond. The double bond is formed by one sigma and one pi bond. Triple bond is formed of one sigma and two pi bonds.
The hydrogen atom is the chemical element in the periodic table which is denoted by the symbol H. The hydrogen is an s-block element present in period 1. The atomic number of hydrogen is 1, so the resulting electronic configuration of hydrogen is $1{s^1}$. As, the bond is formed by the mutual sharing of electrons between the two atoms. The hydrogen can only share one electron to the other atom to form a single bond.
Therefore, hydrogen can form a single bond.

Note:
Don’t get confused as in this question bond formation by a hydrogen atom is asked not for hydrogen molecules. In hydrogen molecules also two hydrogen atoms are bonded by a single bond by sharing one electron each.