Chapter 5: The Periodic Table

How many valence electrons do Alkaline Earth Metals have?

As you move across the periodic table from left to right, elements become less

The majority of elements on the periodic table are classified as

Which class of elements are found on the far right side of the periodic table?

Elements in the same group have the same number of

What is the atomic symbol for the element in the picture?

80% of isotopes have a mass of 50 amu, & 20% have a mass of 60 amu. What is the average mass?

Which element is found in nearly every compound in your body.

How many valence electrons do halogens have?

Elements on the periodic table are arranged in order of increasing

Which class of elements form the "staircase" elements?

Magnesium is important for photosynthesis.  What group is magnesium found in?

The number 55.847 is the element's

Which class of elements are good conductors of heat and electric current?

Which of the following elements can be found in the Carbon family?

Each row on the periodic table is called a 

How many valence electrons does the Nitrogen family have?

Boron is used to make laboratory glassware strong.  How many valence electrons does Boron have?

These elements are colorless, odorless gases, and have very low reactivity.

Where are valence electrons found?

The number circled in red in the picture is the element's

The scientist who organized the elements into the periodic table.

Which of the following contains highly reactive elements?

What is the standard unit for the mass of an atom?

Each column on the periodic table is called a 

Which group is highlighted in the periodic table in the image?

These elements are highly reactive, and tend to bond with alkali metals.

Which has a greater mass: Chlorine-35 or Chlorine-37?

Which group is highlighted on the periodic table in the image?