With the electron configuration [ar]4s^2 3d^10 4p^5?
A. Stable metal
B. Stable nonmetal
C. Unstable nonmetal
D. Unstable metal
What is the electron configuration of the element in group 14 and period 4 of the periodic table?
A. [ne]3s^2 3p^4
B. [ar]4s^2
C. [ar] 4s^2 3d^10 4p^2
D. [kr] 5s^2 4d^2
Can you explain how you figure this out because I have no idea