How many neutrons does cobalt have if its atomic numbers is 27 and its mass number is 59?; How many protons neutrons and electrons are there of cobalt has an atomic number of 27 a mass number of 58 and a charge of 3?; How many neutrons are present if cobalt has an atomic number of 27 a mass number of 59 and a charge of 3?; What is the number of protons of cobalt if it has a number of 27 in atomic number?; How many neutrons does an atom have if its mass number is 27 and it has 13 protons?; How many neutrons in atomic number is 27?