History of the Periodic Table

In which century did Hennig Brand make his discovery - isolating Phosphorous?

• 16th century

• 17th century

• 18th century

• 19th century

In which decade did Antoine Lavoisier compile a list of known elements?

• 1770s

• 1780s

• 1790s

• 1800s

How many elements were on Antoine Lavoisier's list of known elements?

• 15

• 23

• 30

• 50

What is the name of the table created by Alexandre-Émile Béguyer de Chancourtois?

• Telluric Helix

• Periodic Table

• Spiral Chart

• Atomic Wheel

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According to Newlands' arrangement, which element is listed 8th?

• Oxygen (O)

• Fluorine (F)

• Sodium (Na)

• Magnesium (Mg)

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What pattern did Newlands observe in the properties of elements?

• They were random

• They repeated every 8th element

• They increased linearly

• They decreased exponentially

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How did Lothar Meyer's periodic table differ from Mendeleev's?

• It included noble gases

• It was arranged alphabetically

• It was based on atomic volumes

• It was based on atomic numbers

What was the purpose of the blank spaces in Mendeleev's table?

• To separate different groups

• To indicate undiscovered elements

• To make the table more readable

• To highlight important elements

What was Henry Moseley's major contribution to the Periodic Table?

• He arranged elements by atomic number instead of atomic mass

• He introduced the concept of electron shells

• He discovered the noble gases

• He proposed the Actinide series

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What is the atomic weight of Beryllium (Be) according to Mendeleev's Periodic Table?

• 9.4

• 10

• 11

• 12

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