Why the compound containing calcium and chlorine is classified as an ionic compound.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

What is the empirical formula for c4h8o2

Give the orbital configuration of the phosphorus (p) atom.