Periodic Table

The atomic number of an element tells the number of _____ in the nucleus of an atom of that element.

• protons
• neutrons
• electrons
• isotopes

What period is Lead (Pb) in?

• 6

• 4

• Metals

• 4A

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What category is silicon (Si) a part of?

• Metal

• Nonmetal

• Metalloid

• Halogens

What Element is in period 4, group 5A/15?

• Antimony

• Arsenic

• Tin

• Germanium

What group or family is Mercury (Hg) in?

• Transition Metals

• Other Metals

• Noble Gases

• Alkali metals

Which is a halogen?

• Helium
• Chlorine
• Oxygen
• Neptune

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The Modern Periodic Table of Elements is arranged by

• atomic mass
• atomic number
• valence electrons
• number of isotopes

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The horizontal (side to side) rows in the Periodic Table are called

• groups

• families

• periods

• atomic numbers

Who invented the Periodic Table?

• Mendeleev

• Bohr

• Lewis

• Democritus

How did Mendeleev arrange the elements?

• alphabetical 
• density
• melting point
• atomic mass

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