Periodic Table Review

At room temperature, more than half of the nonmetals are

Most elements on the periodic table are

Which scientist discovered the nucleus of an atom?

Which group has the MOST reactive elements on the periodic table?

Most metals are

The smallest particle into which an element can be divided is called a(n)

How did Mendeleev arrange his first periodic table?

The periodic table has ____ groups.

Which particle has a mass of 0 amu?

Which scientist determined the shape of an atom and said that elements form compounds?

Which 2 particles are found inside the nucleus of an atom?

How is today's periodic table arranged?

What is the name of the elements in Group 18 that do not form compounds?

If an element has 21 protons, how many electrons does it have?

From an element's location in the periodic table, you can predict

Which model says that electrons float around in a cloud like region around the nucleus?

The elements to the right of the stair step are called

Who created the first periodic table?