Does anyone have the answers to the end of semester test B for chemistry on Edmentum?

List the following gasses

Ahigh energy (high speed) particle (alpha or beta or neutron) are shot at the target;

Ithink it's the third answer

The ground state electron configuration of a phosphorous atom has  three unpaired electrons. they're in the 3p sublevel. the electron configuration is: , for a total of  15 electrons.