Periodic Table and Atom Review

Which number on the periodic table tells you the number of protons and electrons?

• atomic mass

• atomic number

Which number on the periodic table tells you the number of protons and neutrons added together?

• atomic mass

• atomic number

Which elements share characteristics of both metals and nonmetals?

• metals

• nonmetals

• metalloids

The least reactive elements are nonreactive gases which are called ________.

How is the periodic table arranged?

• by increasing number of neutrons

• by increasing atomic number

• decreasing atomic mass

• decreasing mass number

In which group or family are helium, neon, and argon located?

• transition metals

• alkaline earth metals

• noble gases

• halogens

Which element has the LEAST number of protons?

• xenon

• oxygen

• potassium

• boron

Which of the following correctly describes element gold?

• 79 protons and 78 neutrons

• 79 protons and 79 electrons

• 78 protons and 78 electrons

• 79 electrons and 125 neutrons

Which of the following elements is a metal?

• cesium

• silicon

• chlorine

• radon

Which of the following is nonmetal?

• vanadium

• magnesium

• fluorine

• silver