Radium (Ra) is in the same group of the Periodic Table as magnesium. What is the charge on a radium ion?

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

Define the kinetic molecular theory