An element has an atomic mass number of 16 and an atomic number of 7. how many protons and neutrons do they have

Explanation:

Total number of protons present in an atom or element is known as the atomic number. On the other hand, sum of total number of protons and neutrons present in an element is known as a

For example, an atom with atomic number 7 and atomic mass 16 means there are 7 protons.

Whereas number of neutrons are calculated as follows.

             Atomic mass = no. of protons + no. of neutrons

                    16 = 7 + no. of neutrons

                    no. of neutrons = 16 -7

                                               = 9

Thus, we can conclude that the given atom contains 7 protons and 9 neutrons.

if you listed your answers right then i believe your answer is b.