The Genius of Mendeleev's Periodic Table

Which scientist edited the Periodic Table and arranged elements in increased atomic number?

• Rutherford

• Dalton

• Mendeleev

• Moseley

The diagram shows a portion of the periodic table. Elements that were unknown during Mendeleev's time have been removed. Using Mendeleev's rules for arranging elements, which box would contain the metal gallium, which has an atomic number of 31 and an atomic mass of 70?

• Only box 3

• Either box 2 or box 3

• Only box 2

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NGSS.MS-PS1-1

Mendeleev organized his Periodic Table by ____ in the same way that today's Periodic Table is organized by atomic number.

• protons

• atomic mass

• neutrons

Mendeleev's Periodic Table lacked _____.

• noble gases

• chemical property trends

• neutrons

How does the Periodic Table used today classify elements?

• According to chemical properties alone

• According to atomic number

• According to atomic mass

who credited with creating the periodic table?

• Isaac Newton

• Dmitri Mendeleev

• Albert Einstein

• Cecil George Paine

What did Dmitri Mendeleev do that set him apart?

• Created a list of all known elements

• Arranged all the known elements together based on their properties

• Made accurate predictions about undiscovered elements based on where they would live in the periodic table

• Accidentally discovered Plutonium

In 1963, what did scientists officially name the element at 101 on the periodic table?

• Menedeleevium

• Dimitrionium

• Phosphomendelev

• Phosphordimitrius

What is the atomic mass of Neon?

• 10

• 30

• 10.18

• 20.18

The Russian scientist who made the periodic table in 1872

• Isaac Newton

• Antoine Lavoisier

• Dmitri Mendeleev

• Gregor Mendel