1. The atomic mass of an element is
A. the sum of the protons and neutrons in one atom of the element.**
B. twice the number of protons in one atom of the element.
C. a ration based on the mass of a carbon-12 atom
D. a weighted average of the masses of an element's isotopes
5 answers
D is the best asnwer.
I believe so to, A, and D both seem right to me.
Nope, think about D and you know why A is wrong.
the correct answer is D. I took a test and scored a 5/5 100%. Thanks to the people who said it was D.
Atomic mass of an element is the sum of number of -------- and ------. *
1 answer