Periodic Trends

Which list of elements from group 2 on the periodic table is arranged in order of increasing atomic radius?

• Be, Mg, Ca

• Ca, Mg, Be

• Ba, Ra, Sr

• Sr, Ra, Ba

Which of the following will have a larger radius than Zinc?

• Gallium
• Aluminum
• Magnesium
• Strontium

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NGSS.HS-PS1-1

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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The element with the lowest electronegativity in Period 3 is -

• Na

• Cl

• Ar

• Mg

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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

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NGSS.HS-PS1-1

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

• decreases, increases 
• increases, increases
• increases, decreases 
• stays the same, increases

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The common charge on an atom in group 17 would be....

• +1

• +7

• -7

• -1

• 17

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NGSS.HS-PS1-1

Atoms that have a high electronegativity, _______________.

• give up their electrons more easily.
• hold on to their electrons more tightly.
• have more electron shells.

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Which of the following will have a higher electronegativity than arsenic (As)?

• Carbon (C)
• Neon (Ne)
• Antimony (Sb)
• Germanium (Ge)

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NGSS.HS-PS1-1

The atom with the largest atomic radius in Period 4 (row 4) is - 

• K
• Kr
• Fe
• Fe

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