Do atoms exist as a single atom or as a group of atoms ?

The force of attraction between any two atoms or a group of atoms that results in a stable entity is known as

If an unpaired electron is present on a carbon atom in a group of atoms which is formed due to homolysis of a covalent bond, it is called alkyl free radical

Inductive effect is the permanent displacemetn of electrons along a carbon chain when some atom or group of atoms with different electronegativity than carbon is attached to carbon chain

How does atomic radius vary in a period and in a group? How do you explain the variation.

How does atomic radius vary in a period and in a group? How do you explain the variation?

Why do some elements exist as molecules and some as atoms?

In substitution reactions, an atom or a group attached to a carbon atom in a substrate molecule is replaced by another atom or group

Carbocation is a group of atoms that contains a carbon atom bearing positive charge and has only six electrons on its valence shell

In elimination reactions, generally atoms or groups from adjacent carbon atoms in the substrate molecule are removed and a multiple bond is formed