Question

Bio help again ;-;

http://prntscr.com/cpwabq

Answer 1

So the identity of the element doesnt change because it's dictated by the number of protons. Atomic number = # of protons. (use the periodic table)

The number at the end of the name indicates the "mass number", which is the sum of the protons and neutrons.

Answer 2

ah i see

i got 72 is that correct ?

Answer 3

So yeah, the mass number is 31+41 = 72

the atomic number is 31, so it is Gallium

Answer 4

alright thanks! :3

Answer 5

no problem :)