You throw a ball so that it hits the floor a few feet in front of you. Will it bounce back to you? Explain how the bounce is similar to the way light behaves?

No. The ball wil not bouce back to you. A ball is similar to how light behaves because when you bounce a ball, it will go in a straight line and when it hits something, it will bouse again and go somewhere else. This is also how light behaves.

Explanation:

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."