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An atom has 27 protons and 22 neutrons. What is the chemical symbol for the atom? Consult the periodic table. O Co О Cs O Cr O Ca
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An atom has 27 protons and 22 neutrons. What is the chemical symbol for the atom?

Consult the periodic table.
O Co
О Cs
O Cr
O Ca

User Kevin Burke
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explanation
The cobalt atom has 27 protons as seen in the periodic table. There are also 27 electrons because the charge is 0. There are 33 neutrons because 60-27 = 33.
User Vlad DX
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