Respuesta :

16 neutrons are present in the most abundant isotope.

Explanation:

Phosphorus has 18 isotopes. The most common isotope has mass number (no. of protons 15+ no. of neutrons 16=) 31 .

16 neutrons are present in the most abundant isotope...
Because the P
hosphorus has 18 isotopes. The most common isotope has mass number (no. of protons 15+ no. of neutrons 16=) 31 .