The position of an element on the periodic table help scientists predict the number of electrons an atom will gain or lose during ion formation according to the periodic table of elements which element is most likely to gain two electrons when it forms an ion? A. Calcium
B. Mercury
C. Oxygen
D. Iodine

graph question answered .. you think better when you are relaxed and happy

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.