I'm filling out a chart for 107 (top left) 46 (bottom left) Pd. The Atomic no. is 46, the mass number is 107, the proton number is 46, but I can't seem to figure out what the neutron amount is. Can you help? Thanks.

Question

I'm filling out a chart for 107 (top left) 46 (bottom left) Pd.  The Atomic no. is  46, the mass number is 107, the proton number is 46, but I can't seem to figure out what the neutron amount is.  Can you help? Thanks.

DrBob222 · Answer

# protons + # neutrons = mass number. Any two and you can calculate the third.