WHAT IS FREE RADIAL , CONJUCTION , TWITER IONS, HYPERCONJUCTION

FREE RADIAL is an uncharged molecule (typically highly reactive and short-lived) having an unpaired valency electron.
In organic chemistry, hyperconjugation is the interaction of the electrons in a sigma bond (usually C–H or C–C) with an adjacent empty (or partially filled) non-bonding p-orbital, antibonding σ or π orbital, or filled π orbital, to give an extended molecular orbital that increases the stability of the system.
a conjugated system is a system of connected p-orbitals with delocalized electrons in compounds with alternating single and multiple bonds, which in general may lower the overall energy of the molecule and increase stability