The atomic number & mass number of an element is z & m respectively then the number of neutrons will be

\times

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m + z

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m / z

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m - z

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Solution

The correct option is D m - z
The number of neutron is equal to the difference between the mass number of the atom (m) and the atomic number (z)
$∴$ It is equal to $m = z$

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The atomic number & mass number of an element is z & m respectively then the number of neutrons will be

The correct option is D m - zThe number of neutron is equal to the difference between the mass number of the atom (m) and the atomic number (z)∴ It is equal to m=z

The correct option is D m - z
The number of neutron is equal to the difference between the mass number of the atom (m) and the atomic number (z)
$∴$ It is equal to $m = z$