select the correct answer. when a radioactive magnesium (mg) atom decays by emitting a positron, what is the…

select the correct answer. when a radioactive magnesium (mg) atom decays by emitting a positron, what is the identity of the resulting atom? a. aluminum (al) b. magnesium (mg) c. neon (ne) d. sodium (na)

select the correct answer. when a radioactive magnesium (mg) atom decays by emitting a positron, what is the identity of the resulting atom? a. aluminum (al) b. magnesium (mg) c. neon (ne) d. sodium (na)

Answer

Brief Explanations:

Positron emission is a type of radioactive decay where a proton in the nucleus is converted into a neutron, and a positron and a neutrino are emitted. Magnesium has an atomic number of 12. When it undergoes positron - emission, the atomic number decreases by 1. So the resulting atom has an atomic number of 11, which is sodium.

Answer:

D. sodium (Na)