PS - Periodicity Quiz

Which element has the smallest atomic radius in Period 2?

• Be

• C

• F

• Li

Tags

NGSS.HS-PS1-1

Which element has the lowest ionization energy in Group 1?

• Li

• Na

• K

• Fr

In Group 1, reactivity increases as you go...

• Up the group

• Down the group

• Across a period

• Toward the noble gases

Electron affinity becomes more negative as you...

• Move down a group

• Move across a period

• Move from right to left

• Gain protons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which group tends to have the most negative electron affinities?

• Noble gases

• Halogens

• Alkali metals

• Alkaline earth metals

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which element likely has the least negative electron affinity?

• Cl

• O

• Ar

• N

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which group is the most reactive nonmetals?

• Group 1

• Group 2

• Group 17

• Group 18

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Why are alkali metals so reactive?

• They have full outer shells

• They easily gain electrons

• They easily lose their one valence electron

• They are noble gases

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atomic radius increases...

• Across a period

• Up a group

• Down a group

• With increasing ionization energy

Which element has the highest first ionization energy?

• Na

• Ne

• Cl

• K

Tags

NGSS.HS-PS1-1