Question

The atomic number of atom X is 15 and number of neutron in the atom is 16. What is the mass number of atom X?
With explanation please​

Answer 1

atomic number is 15 , X is Phosphorus

mass number=15+16(no.of atomic no.+ no.of neutron)

mass number=31

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Answer 2

Answer:

atomic mass of Phosphorus is 30.973762 u