Answer:
this is fairly simple if you have a periodic table with you.
Explanation:
atomic number 17 is Cl mass numer is 35.45 for protons neutron and electron you can just look that up on google. atomic number is where it is at on the periodic table and the mass number is in the little square at the bottom.
It is B. Thank you later please and do good on the test!
True. Ions can have a positive or negative charge.
The answer is A. you sre correct!
I believe the answer is "Bohr's model explains the chemical behavior of all atoms."
