Question

An atom contains 9 protons and 10 neutrons.name the atom and calculate the following.(a) atomic mass

Answer 1

To calculate the atomic mass. We need to add up no. Of protons amd no. Of neutrons.
Hence answer is 9+10 = 19

As no. Of protons is equal to the atomic number. Then name of atom will be florine.

I hope this is the answer. And it helped you!