What is the process in which trace amounts of other elements are added to a material to make it a semiconductor?
a. doping
c. ionization
b. salting
d. conduction

Mg-26 and mg-24 are pair of isotopes. isotopes are defined as atoms of the same element having same atomic number but different mass number. i hope that was .

Answerchemical;

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.