PLEASEEEEEEEEEEEEEe HELP

Answer:
if they are similar 30/5 is 6 so 6x6 is 36 that shoul# be the answer don't quote me
Answer:
the other guy said the answer sooo
Step-by-step explanation:
can you help me out
If an element sample has two or more atoms with the same number of protons but different number of neutrons it is called a(n)
isotope
neutron
electron
none of the above