In the equation: #"_90^234Th -># #"_91^234Pa + X#, which particle is represented by X?

1 Answer
Feb 1, 2017

Answer:

The particle is an electron #=""_-1^0e#

Explanation:

#""_90^234Th->""_91^234Pa+X#

We have conservation of the number of nucleons and charge number

For #X#, the number of nucleons is #=0# and the charge number is #=-1#

# ""_-1^0 X #

This particle is #beta^-# which is an electron #""_-1^0e#