Ionization Energy Trends

Explain the relationship between electron configuration and ionization energy.

• Atoms with stable electron configurations have higher ionization energy.

• Atoms with stable electron configurations have lower ionization energy.

• Electron configuration has no impact on ionization energy.

• Atoms with unstable electron configurations have higher ionization energy.

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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

Ions are formed when atoms gain or lose ___.

• electrons

• protons

• neutrons

• atomic mass

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The more protons there are, the  ____ .

• Weaker the pull

• Smaller the electrons

• Stronger the pull

• The bigger the electrons

Which of the following is true for alkaline earth metals as their atomic number increases?

• The atomic radius decreases.

• Ionization energy decreases.

• The number of valence electrons increases.

• The Coulombic attraction increases.

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Which element has the greater ionization energy?

• Strontium

• Boron

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Put the following in order of increasing ionization energy:Sodium, Oxygen, Boron

• Sodium, Boron, Oxygen

• Oxygen, Boron, Sodium

• Sodium, Oxygen, Boron

• Oxygen, Sodium, Boron

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Which of the following is true about a sulfur atom and a chlorine atom?

• Sulfur is larger and has higher ionization energy.

• Sulfur is larger and has lower ionization energy.

• Sulfur is smaller and has higher ionization energy.

• Sulfur is smaller and has lower ionization energy.

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Which of the following generally applies to the noble gases?

• high ionization energy, low electronegativity, high reactivity

• high ionization energy, high electronegativity, high reactivity

• low ionization energy, low electronegativity, low reactivity

• high ionization energy, low electronegativity, low reactivity 

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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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