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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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1 Answer

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first one
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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