Isotopes of the same elementhave nuclei with identical.....? and Why?
a. mass numbers
b. numbers of protons
c. numbers of nuetrons
d. number of electrons

Question

Isotopes of the same elementhave nuclei with identical.....? and Why?
a. mass numbers
b. numbers of protons
c. numbers of nuetrons
d. number of electrons

aaronq · Answer

the number of protons for a certain element is fixed, for example, Carbon always has 6 protons, Nitrogen always has 7 protons. Isotopes are element with different amounts of neutrons. 

Carbon-12 has 6 protons and 6 neutrons
Carbon-14 has 6 protons and 8 neutrons

anonymous · Answer

Thank you so much @aaronq

aaronq · Answer

no problem dude

anonymous · Answer

I am a girl, but thanks anyway lol

aaronq · Answer

oh sorry lol

anonymous · Answer

Ohh its ok, i dont mind @aaronq What grade are you in??

aaronq · Answer

i'm in third year of uni. you?

anonymous · Answer

I am in 10th grade....What uni. do you go to??

aaronq · Answer

cool. uni of toronto  (in canada)

anonymous · Answer

wow thats cool, I am guessing that your major has something to do with Chemistry?

aaronq · Answer

yes ma'am, biological chemistry (aka biochemistry)