An atom has mass number 32 and 16 neutrons. The number of electrons revolving around its nucleus are _________.

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Solution

Mass number = 32 (Given)
Number of neutrons = 16 (Given)
Mass number: Mass number of an element is equal to the number of nucleons present in the atom.
Mass number = Number of protons+ Number of neutrons
Number of protons = Mass number- Number of neutrons
On substituting the values in above equation
Number of protons = 32- 16 = 16
In the case of an atom that is electrically neutral, the number of protons= number of electrons
Therefore, the number of electrons = 16
Therefore, if an atom has mass number 32 and 16 neutrons. The number of electrons revolving around its nucleus are 16.

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