cobalt has a mass number of 59 and an atomic number of 27. a student wants to create a model or a cobalt atom. which statement about the model is correct?
The one that might say the number of neutrons = 59-27=32
and the number of electrons = 27
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The correct statement about the model of a cobalt atom is that it should have 27 protons and 27 electrons. This is because the atomic number of cobalt (symbol Co) represents the number of protons in the nucleus, which is also equal to the number of electrons in a neutral atom.
To create a model of a cobalt atom, you need to consider its atomic number and mass number.
The atomic number of cobalt is 27, which represents the number of protons in its nucleus. So, you would start by placing 27 protons in the nucleus of your model.
The mass number of cobalt is 59, which represents the total number of protons and neutrons in its nucleus. Since the atomic number tells us the number of protons, we can subtract that from the mass number (59 - 27 = 32) to determine the number of neutrons. Thus, you would place 32 neutrons in the nucleus.
Electrons surround the nucleus in energy levels or shells. The atomic number also tells us the number of electrons in a neutral atom. Since cobalt has 27 protons, it will have 27 electrons. These electrons occupy different energy levels, starting from the innermost shell and progressing to the outermost shell.
Therefore, the correct statement about the model of a cobalt atom would be that it should have 27 protons, 32 neutrons, and 27 electrons arranged in the energy levels or shells around the nucleus.