Science Questions and Answers

Start Your Free Trial

From what radioactive element does fluorine-19 form by positron emission?

Expert Answers info

ndnordic eNotes educator | Certified Educator

calendarEducator since 2009

write387 answers

starTop subjects are Science and Math

A positron is a particle with a mass of zero and a charge of +1.  So to solve, you write a balanced equation so that the atomic numbers and total mass are equal on both sides of the equation.

Element X --> F-19 + positron (mass = 0, charge = +1)

F-19 has an atomic number of +9.

Add the +9 to the +1 for the positron means the unknown element has an atomic number of +10 which is Neon.

The isotope of neon would be Ne-19.

check Approved by eNotes Editorial