Drawing Lewis Dot Diagrams for Atoms and Molecules

Mr. Andersen explains how to draw Lewis dot diagrams, starting with individual atoms like cesium and neon, and progressing to molecules such as H2, H2O, and CO2. He emphasizes the importance of understanding valence electrons and their role in chemical reactivity. The video also covers the periodic table's organization, focusing on alkali metals and noble gases. Finally, Mr. Andersen discusses the legacy of Gilbert Lewis, the chemist behind Lewis dot diagrams.

What is the atomic number of cesium?

• 53

• 54

• 56

• 55

How many valence electrons does cesium have?

• 1

• 4

• 2

• 3

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NGSS.HS-PS1-1

Which group of elements on the periodic table is known for having eight valence electrons?

• Transition metals

• Halogens

• Alkali metals

• Noble gases

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NGSS.HS-PS1-1

How many valence electrons does neon have?

• 8

• 7

• 6

• 9

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NGSS.HS-PS1-1

What is the correct Lewis dot structure for hydrogen?

• H:

• H

• H.

• H-

How many valence electrons does oxygen have?

• 4

• 5

• 6

• 7

Tags

NGSS.HS-PS1-1

In a Lewis dot diagram, what does a single line between two atoms represent?

• A single electron

• A pair of electrons

• A triple bond

• An ionic bond

What is the Lewis dot structure for water (H2O)?

• H-O=H

• H=O-H

• H=O=H

• H-O-H

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NGSS.HS-PS1-1

How many valence electrons does carbon have?

• 6

• 2

• 8

• 4

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NGSS.HS-PS1-1

How many times was Gilbert Lewis nominated for the Nobel Prize?

• 25

• 30

• 35

• 40