How many `alpha` and `beta` particles are emitted during the transformation of `overset(228) underset(90) Th` to `overset(216) underset(86) Rn` ?

Identify A, B, C and name the reaction involved in the transformation of B to C. CH_(3)-underset(underset(O)(||))(C )-NH_(2) underset(P_(4)O_(10))overset("Heat")rarr [A] overset(LiAlH_(4))rarr [B] underset(KOH)overset("Heat," CHCl_(3))rarr underset("Foul smell")([C])

The rate of a reaction can be expressed by Arrherius equation as : k = underset Ae overset (E_alpha )//( RT) .In this equation E_alpha represents.