UNIT 1.4: Periodic Table Trends

Which of the following will have a larger 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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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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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 neutrons

As you move across a row on the periodic table atoms tend to get smaller because...

• atoms have more neutrons

• the atoms have more protons but the electrons are in higher energy levels.

• the atoms have more protons but the electrons are in the same energy level

• the atoms have more protons but the electrons are in lower energy levels.

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Ionization energy is...

• 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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Which statement correctly and completely identifies a trend?

• Atomic radius decreases across a period and increases down a group.
• Electronegativity decreases across a period and decreases down a group.
• Ionization energy increases across a period and increases down a group.
• Ionic radius increases across a period and increases down a group.

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Which of these elements has the greatest atomic radius? 

• H
• N
• Cl
• Cs

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Fluorine, chlorine, bromine, and iodine all have the same number of valence electrons and have a tendency to gain electrons. Which element has the greatest ionization energy and electronegativity?

• fluorine
• chlorine 
• bromine 
• iodine 

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The ionization energy of an element is the amount of energy required to remove an electron from an isolated atom. According to the periodic table, which of the following indicates the correct decreasing order of ionization energy?

• Li > Na > K > Cs

• Na > K > Li > Cs

• Li > K > Na > Cs

• Cs > K > Na > Li

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