Question

The element boron (B, atomic number 5 and atomic mass 11) is right above aluminum (Al, atomic number 13 and atomic mass 27) in the periodic table. How many more electrons does aluminum have than boron? Why?

Answer 1

The correct answer is D. There are 8 more electrons in aluminum because you subtract the atomic number of boron from aluminum. 13-5=8

Answer 2

B, atomic number 5, and atomic mass 11.