Periodic Table Quiz

The Russian scientist, Dmitri Mendeleev, noticed that by arranging the elements known at his time in order of increasing ____________, similarities in the chemical properties appeared at regular intervals.

• atomic number

• atomic mass

• group number

• period number

Mendeleev predicted that spaces left in his periodic table represented

• isotopes.

• radioactive elements.

• undiscovered elements.

• noble gases.

Based on evidence collected since Mendeleev’s time, elements on the modern periodic table are arranged in order of ____________.

• mass number

• group number

• average atomic mass

• atomic number

The periodic law states that the physical and chemical properties of elements are periodic functions of their

• atomic masses.

• atomic numbers.

• atomic radii.

• ionic charges.

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What periodic group includes argon, krypton, and xenon?

• noble gases

• halogens

• alkaline earth metals

• actinides

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Elements in a group on the periodic table can be expected to have similar

• atomic masses.

• number of neutrons.

• properties.

• atomic numbers.

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Each period on the periodic table corresponds to

• an energy level.

• a sublevel.

• atomic mass.

• atomic number.

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The horizontal rows on the periodic table are called

• groups.

• families

• an octet.

• periods.

Calcium, Ca, and arsenic, As, belong to

• Group 17.

• Period 4.

• Group 2.

• Period 3.

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The electron configuration for phosphorus is [Ne]3s²3p³. Phosphorus is in period

• 2.

• 3.

• 5.

• 15.

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