LIFE SCIENCE

Detailed explanation-1: -The hydrogen molecule is the simplest substance having a covalent bond. It forms from two hydrogen atoms, each with one electron in a 1s orbital. Both hydrogen atoms share the two electrons in the covalent bond, and each acquires a helium-like electron configuration.

Detailed explanation-2: -Hydrogen Bonding. Hydrogen bonding is a special type of dipole-dipole attraction between molecules, not a covalent bond to a hydrogen atom.

Detailed explanation-3: -Bond formed in a hydrogen molecule is non-polar covalent bond.

Detailed explanation-4: -Hydrogen bonds occur between hydrogen and electronegative atoms such as oxygen (H2O) or chlorine (HCl). Hydrogen bonds are polar because the hydrogen and the electronegative atom do not share electrons equally.

Detailed explanation-5: -Hydrogen can participate in both ionic and covalent bonding. When participating in covalent bonding, hydrogen only needs two electrons to have a full valence shell. As it has only one electron to start with, it can only make one bond.