Question

The atomic number and mass number of Phosphorus is 15 and 31. Deduce the
number of neutrons present in the nucleus. ​

Answer 1

Answer:

16

Explanation:

For example, the element phosphorus (P) has an atomic number of 15 and a mass number of 31. Therefore, an atom of phosphorus has 15 protons, 15 electrons, and 16 neutrons (31-15 = 16)

Answer 2

=>Atomic Number = No. Of Proton

=> No Of Protons = 15

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=> Mass Number =

No. Of Proton + No. Of Neutron

=> 15 + No. Of Neutron = 31

=> No Of neutron = 31 - 15

=> No. Of Neutron = 16