what is the atomic number and atomic mass number for an isotope of Dy with 99 neutrons. Give two answers: first, the atomic number; then, the atomic mass number.
how many protons are in one atom of tin-119
how many neutron in one atom of copper-64
Dysprosium has atomic number = 66 , so the mass number is 99+66 = 165
All tin isotopes have 50 protons
Cu 64 has 35 neutrons
Content will be erased after question is completed.
Enter the email address associated with your account, and we will email you a link to reset your password.
Forgot your password?