Chemistry Periodic Table Quiz Part 1

What was Mendeleev's periodic table organized with?

• Atomic mass

• Atomic number

• Groups

• Electron configuration

How many elements was Mendeleev working with?

• 63

• 62

• 55

• 78

What was so special about Mendeleev's table?

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Answer explanation

- Elements with similar properties are near each other

- Left blanks and predicted unknown elements

What did Stantislao Canizzoro do?

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Determined a method to calculate very accurate atomic masses (known as standardized atomic mass)

What did Henry Moseley do?

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Answer explanation

Rearranged elements on periodic table by increasing atomic number

Write the electron configuration with noble gases of lithium.

Write the electron configuration with noble gases of silicon.

Write the electron configuration with noble gases of arsenic.

Valence electron amount remains the same within ______.

• groups

• periods

Valence electrons amount changes within ______.

• groups

• periods