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 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 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.

Answer 1

To create a model of a cobalt atom with a mass number of 59 and an atomic number of 27, we need to understand the following:

• 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:

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

Therefore, the correct statement about the model is:

The model should show 27 protons and 32 neutrons.