How can I buy an elevator and put it in my two stroy house?
1.Ca lose 2 electrons to be ion 2.F gain 1 electron to be ion 3Al lose 3 electrons to be ion 4O gain 2 electrons to be ion
1general stable ion for Ca is Ca^2+ ; so it must lose 2 electrons 2general stable ion for F is F^- ; so it must gain 1 electron 3general stable ion for Al is Al^3+ ; so it must lose 3 electrons 4general stable ion for O is O^2- ; so it must gain 2 electrons
Call Otis ElevatorBig bucks but cheaper than moving.
