Mon March 05, 2012 By: Palak Saxena

How can a nucleus emit electrons,in a beta decay,when it does not have one!? thank you.

Expert Reply
Mon March 05, 2012
During beta decay, a neutron in an atom's nucleus turns into a proton, an electron and an antineutrino. The electron and antineutrino fly away from the nucleus, which now has one more proton than it started with. Since an atom gains a proton during beta decay, it changes from one element to another.
Home Work Help