Which element in Period 2 has the greatest atomic radius?

• Be

• C

• Na

• Li

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Which of the group 13 elements is the largest?

• B

• Tl

• Fr

• Ga

Which of the metalloids has the smallest atomic radius?

• Si

• B

• Sb

• Al

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Of the halogens, which has the smallest electronegativity?

• F

• Cl

• At

• Ne

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Which of the alkaline-earth metals has the smallest electronegativity

• Be

• Sc

• Ra

• Sr

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NGSS.HS-PS1-2

Which of the period 3 elements has the largest electronegativity?

• Ar

• Cl

• Na

• F

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Which of the transition metals in the 5th period is the largest?

• Y

• Mo

• Rb

• Xe

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Which element in the Lanthanide Series has the largest atomic radius?

• Th

• Ce

• Gd

• Lu

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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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Which of the following will have a lower ionization energy than Scandium (Sc)?

• Helium (He)
• Titanium (Ti)
• Calcium (Ca)
• Magnesium (Mg)

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NGSS.HS-PS1-2