Respuesta :
Explanation:
Atomic number of copper is 29 and it sis known that atomic number is the sum of total number of protons present in `an atom.
Whereas atomic mass is the sum of total number of protons and neutrons present in an atom.
As atomic mass of copper is 64. Hence, calculate the number of neutrons present in a copper atom as follows.
Atomic mass = no. of protons + no. of neutrons
64 = 29 + no. of neutrons
no. of neutrons = 64 - 29
= 35
Therefore, we can conclude that in an atom of copper there are 35 neutrons.
