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17-10-2017
Chemistry

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An atom nucleus contains 28 protons and the atom has a mass number of 60. how many neutrons does this atom contain? how many electrons? what is the identity of the atom?

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ejelonubenedict ejelonubenedict

20-10-2017

Number of neutrons = mass number - proton number = 60- 28 = 32
electrons = proton number for a neutral atom = 28
the identity of the atom is written as
60
. X
28

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