What does the atomic radius measure?

• mass of an atom

• size of an atom

• density of an atom

• strength of an atom

Why does Cs have a larger radius than Rb?

• Because Cs has more protons than Rb

• Because Rb has 1 more electron shell than Cs

• Because Cs has 1 less electron shell than Rb

• Because Cs has 1 more electron shell than Rb

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NGSS.HS-PS1-1

For period 2 on the periodic table which element has the SMALLEST radius?

• Neon

• Fluorine

• Carbon

• Lithium

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NGSS.HS-PS1-1

Which is the largest atom? Smallest Atom?

• Largest: Francium

  Smallest: Helium

• Largest: Helium

  Smallest: Francium

• Largest: Francium

  Smallest: Fluorine

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NGSS.HS-PS1-1

Ionization energy is the energy needed to ____________ an electron from an atom.

• add

• remove

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NGSS.HS-PS1-1

It is much harder to take an electron from a smaller atom?

• false

• true

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NGSS.HS-PS1-1

Is it much easier to steal electrons from a large atom than a smaller one.

• true

• false

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which elements on the periodic table have high ionization energies?

• top right

• bottom right

• bottom left

• top left

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Electronegativity is a measure of an atom's ______________ to electrons.

• repulsion

• attraction

Which element has the highest electronegativity?

• Hydrogen

• Bromine

• Fluorine

• Chlorine

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NGSS.HS-PS1-1

NGSS.HS-PS1-2