The correct statement about the model of a cobalt atom is:
The model should show 27 protons and 32 neutrons.
Here's the reasoning:
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Cobalt has an atomic number of 27, which means it has 27 protons.
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To find the number of neutrons, you subtract the atomic number from the mass number. For cobalt with a mass number of 59:
Number of neutrons = Mass number - Atomic number = 59 - 27 = 32 neutrons.
So, the cobalt atom model should show 27 protons and 32 neutrons.