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)

Question

Responses

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

The model should show 59 protons and 27 neutrons.
The model should show 59 protons and 27 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.

Answer 1

To create a correct model of a cobalt atom, we need to consider the atomic number and the mass number:

• The atomic number (27) represents the number of protons in the atom.
• The mass number (59) is the total number of protons and neutrons in the atom.

To find the number of neutrons, we can use the formula:

\[ \text{Number of neutrons} = \text{Mass number} - \text{Number of protons} \]

In this case:

\[ \text{Number of neutrons} = 59 - 27 = 32 \]

Therefore, the correct statement about the model is:

The model should show 27 protons and 32 neutrons.