Periodic Table Quiz #1

In the modern periodic table elements are arranged by:

• increasing atomic mass

• increasing atomic number

• number of valence electrons

• number of isotopes

The atoms along the staircase are called 

• metals
• nonmetals
• metalloids
• noble gases

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Why did Mendeleev leave blanks in his periodic table?

• he forgot elements
• left room for elements not yet discovered
• placed elements in wrong positions on purpose
• to challenge the ideas of other scientists 

The shaded portion of the periodic table in the picture represents....

• nonmetals
• metals
• metalloids
• gases

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Which is not a metal?

• cadmium (Cd)

• indium (In)

• seaborgium (Sg)

• selenium (Se)

• Metals
• Nonmetals
• Metalloids

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Which element conducts electricity the best?

• Silicon

• Fluorine

• Silver

• Arsenic

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What group is Oxygen in?

• 18

• 12

• 2

• 16

The horizontal rows on the periodic table are called:

• Families

• Periods

• Groups

• Horizontals

The vertical columns on the periodic table that have common properties are called

• Groups

• Periods

• Shells

• Valences

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