Question

Cobalt has a mass number of 59 and an atomic number of 27. A student wants to create a model of a cobalt atom. Which statement about the model is correct?(1 point)
Responses

The model should show 27 protons and 32 neutrons.
The model should show 27 protons and 32 neutrons.

The model should show 32 protons and 59 neutrons.
The model should show 32 protons and 59 neutrons.

The model should show 27 protons and 27 neutrons.
The model should show 27 protons and 27 neutrons.

The model should show 59 protons and 27 neutrons.

Answer 1

The model should show 27 protons and 32 neutrons.

(Atomic number = protons = 27; mass number = protons + neutrons = 59, so neutrons = 59 − 27 = 32.)