Question

write the mass number and atomic number of an atom having 16 neutrons and 15 protons​

Answer 1

Answer:

Name = Phosphorous

Atomic number is equal to protons.

So,  15

Mass number is equal to protons + neutrons

So, 31

Answer 2

Given,

No. of protons = 15

No. of neutrons = 16

 Atomic number = No. of electrons = No. of protons  = 15  

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

                        = 15 + 16

                       = 31  

Therefore, the no. of electrons of this atom of an element are 15, the atomic number is 15 and the mass no. is 31.