This is formed when an atom loses an electron to another atom. a polar covalent bond b ionic bonds c nonpolar covalent bonds d hydrogen bonds !

Ionic bonds- are formed between a metal cation with a positive charge that steals an electron from a negatively charged non-metal anion.

Polar Covalent bonds are formed between two non-metals with a larger electronegativity difference. In these covalent bonds electrons are shared UNEQUALLY.

Non-polar covalent bonds occur between two non-metals that have similar electronegativity values. Electrons are equally shared between atoms in these types of bonds.

Hydrogen bonds usually occur between atoms of two different molecules. For example, the partially positive Hydrogen from one water molecule might be attracted to the partially negatively charged oxygen atom of another water molecule.

Ionic bonds