look at elements that are in the same column going up and down on the periodic table. what do you notice about their electron dot diagrams?

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

Debris produced by mining is called

Which of the following types of electromagnetic radiation has the longest wavelength? a. infrared light b. visible light c. ultraviolet light d. microwaves