Unit 5 Review: Atoms and the Periodic Table

How many valence electrons do halogens (Group 17) have?

What group of elements are inert and never form compounds?

Who organized the periodic table by atomic number?

How is the periodic table of elements organized?

What is the number at the bottom of this element square?

Which is NOT a characteristics of nonmetals?

What is the name for elements in groups 3-12?

What does the atomic number tell us about an ATOM?

What is the name for the group 2 elements?

What was the surprising behavior of some of the alpha particles shot at gold foil? (Rutherford)

Which element is almost entirely different in all its properties when compared to the others?

Who created the first accepted version of the periodic table?

Some elements are highly ___ because their outermost energy levels are only partially filled.

What happens to the number of valence electrons as you go from left to right in a period?

What group number is the most reactive nonmetals?

What are 2 characteristics of metals?

To what group or family does Iodine belong?

A neutral magnesium atom is ionized and loses 2 electrons. What is the charge of the ion?

What is the name of the chemical group that is the most reactive with water?

What is the name of the elements in Group 2 on the Periodic table?

How many groups are in the periodic table?

Why is the average atomic mass a decimal?

How many periods are there in the Periodic Table?

What is the number located at the top middle in this element square?

What elements separate the metals from the nonmetals?

What is atomic mass?

Elements in which chemical group would most easily react to elements in group 17?

How many neutrons are in most isotopes of chlorine?