Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. What statement out the model is correct?
A) The model should show 27 protons and 27 neutrons.
B) Th model should show 27 protons and 32 neutrons.
C) The model should show 59 protons and 27 neutrons.
D) The model should show 32 protons and 59 neutrons.
1 answer
B) The model should show 27 protons and 32 neutrons.