Question

In the electrophilic substitution reaction 1-position of naphthalene is more reactive than its 2-position

Answer 1

Electrophilic substitution reaction in naphthalene is quite similar to benzene reaction. The alpha position is more stabilized than the beta position. The carbocation formed at an alpha position after the attack of an electrophile is much more stabilized by its resonance than the second position. Hence electrophilic substitution is more at C1 than C2 position.