Three-fourths of the elements on the periodic table are:

A. Metals

B. Nonmetals

C. Metalloids

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green

How does the attraction between particles affect the ability of a solvent to dissolve in a substance