Atomic Radius Trends

Within periods on the periodic table: Size decreases as you go down a group

• Flase

• True

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NGSS.HS-PS1-1

As you move ______ a group, more energy levels are added, which increases the size of the atom

• down

• up

• diagonal

• away

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NGSS.HS-PS1-1

Which element's atom is larger? Nitrogen or Phosphorus?

• Nitrogen

• Phosphorus

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NGSS.HS-PS1-1

Which element's atom is the smallest?

• Rhodium

• Silver

• Cadmium

• Tin

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NGSS.HS-PS1-1

Size _________ as you go across a period on the periodic table.

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NGSS.HS-PS1-1

Which of these best explains the reasoning behind the trend that as you go across a period, size decreases?

• As you go across a period, more energy levels are added, which shrinks the atom.

• The added electrons in the nucleus give the atom a negative charge, which shrinks the atom.

• The added protons in the nucleus pull the electrons closer to them, which shrinks the atom.

• All of the above

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which order is correct from largest to smallest atomic radius?

• Thallium, Indium, Gallium, Boron

• Boron, Thallium, Indium, Gallium

• Boron, Gallium, Indium, Thallium

• Thallium, Gallium, Indium, Boron

Tags

NGSS.HS-PS1-1