Atomic Radius Groups

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

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NGSS.HS-PS1-1

The atom with the largest atomic radius in Group 18 is -

• Ar

• He

• Kr

• Rn

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Atomic radius generally increases as we move __________.

• down a group and from right to left across a period

• up a group and from left to right across a period

• down a group and from left to right across a period

• up a group and from right to left across a period

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NGSS.HS-PS1-2

The more protons there are, the ____ .

• Weaker the pull

• Smaller the electrons

• Stronger the pull

• The bigger the electrons

Which one has the largest radius?

• Lithium (Li, atomic #3)

• Boron (B, atomic #5)

• Neon (Ne, atomic #10)

• Nitrogen (N, atomic #7)

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NGSS.HS-PS1-1

The diameter of an atom is also the distance between _____ .

• The total length of two atoms

• The centers of two atoms

• An electron to a proton

• Two neutrons

Of the elements Al, Mg, Si, Na, which has the smallest atomic radius?

• Al

• Mg

• Si

• Na

Tags

NGSS.HS-PS1-1