It has 49 neutrons, 80 mass number (protons and neutrons) and 31 atomic number(protons) so 80-31=49.
300 :)
121
2
A neutron don't contain electrons; the mass of an electron is approx. 1/1850 of the neutronic mass.
There is no such thing as a neutron atom. A neuton is a particle that exists within the nucleus of an atom.
40.6
121
One : "The Adventures of Jimmy Neutron: Boy Genius" is the only one I know of .
Deuterium, 2H has one neutron.
around 30
2
7