Periodic Trends Practice

As you move down a group, atomic radius increases because ____.

• you add more and more neutrons

• you add more and more protons

• you add more and more shells (energy levels)

• you add more atomic mass

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The atom with the largest atomic radius in Group 18 is ___.

• Ar

• He

• Kr

• Rn

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As you move across the periodic table from left to right, the atomic radius decreases.  This is because - 

• the number of protons increases, so attraction to electrons increases
• the number of energy levels increases
• the number of electrons increases
• the atomic mass increases

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

• K

• Kr

• Fe

• Fe

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Electronegativity is...

• the ability of an atom to attract/ accept electrons
• the ability of an atom to lose electrons
• the energy required to remove an electron from a specific atom
• how easy it is to make friends. 

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

• decreases, increases

• increases, increases

• increases, decreases

• stays the same, increases

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Which of the following will have a larger atomic radius than zinc?

• Gallium

• Aluminum

• Magnesium

• Strontium

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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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Ionization energy is defined as ____.

• the energy required to add an electron to a specific atom

• how much energy it takes to remove an electron from an atom

• the energy required to shield the outer electrons from the nucleus

• a measure of the ability of an atom to attract electrons

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Francium (Fr) has the lowest ionization energy in Group 1 because ____.

• it has the smallest number of valence electrons

• it has the greatest atomic mass

• it has the greatest number of protons, so it attracts its electrons the strongest

• its 1 valence electron is very far from the nucleus, so little energy is needed to remove it

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