Answer:
[tex]^{31}_{15}P[/tex] is the isotopic notation of the atom
Explanation:
The isotope notation is:
[tex]^a_bX[/tex]
Where a is the mass number = Number of protons + Number of neutrons
b is atomic number = Number of protons
The atomic number define the nature of the atom, the element with atomic number = 15 is phosphorus, P:
[tex]^a_bP[/tex]
a = 15 protons + 16 neutrons = 31
b = 15
[tex]^{31}_{15}P[/tex] is the isotopic notation of the atom.
