Can activation energy be zero?
Activation Energy of forward reaction can be large, small or Zero.
mostly zero activation energy involves with those reactions which undergo dimerization of molecule due to odd number of electron, combination of oppositely charged ions and pairing of electrons in free radicals.
mostly zero activation energy involves with those reactions which undergo dimerization of molecule due to odd number of electron, combination of oppositely charged ions and pairing of electrons in free radicals.