Ionization Energy and Periodic Trends Quiz

What is ionization energy?

• The energy required to split an atom into ions

• The energy released when an atom gains an electron

• The energy required to remove an electron from a gaseous atom

• The energy required to add an electron to an atom

How does ionization energy generally change across a period from left to right?

• It decreases as effective nuclear charge decreases

• It decreases as atomic size increases

• It remains constant

• It increases as effective nuclear charge increases

What is the relationship between atomic radius and ionization energy?

• Larger atomic radius means higher ionization energy

• Smaller atomic radius means lower ionization energy

• Larger atomic radius means lower ionization energy

• Atomic radius does not affect ionization energy

Which element is an exception to the general trend of ionization energy due to its filled s subshell?

• Nitrogen

• Beryllium

• Boron

• Carbon

Why does nitrogen have a higher ionization energy than oxygen?

• Because nitrogen has a filled s subshell

• Because oxygen has a filled p subshell

• Because nitrogen has a half-filled p subshell

• Because oxygen has a lower effective nuclear charge

What happens to ionization energy as you remove more electrons from an atom?

• It increases because the remaining electrons are more tightly bound

• It remains the same because the number of protons is constant

• It decreases because the atom becomes larger

• It decreases because the atom becomes more stable

Which of the following elements would have the highest second ionization energy?

• Silicon

• Aluminum

• Magnesium

• Sodium

What is the significance of a large jump in successive ionization energies?

• It indicates the removal of a valence electron

• It indicates the removal of a core electron

• It indicates the addition of an electron

• It indicates a decrease in atomic size

Which group of elements typically has one valence electron?

• Noble gases

• Halogens

• Alkaline earth metals

• Alkali metals

Which element would likely have a higher ionization energy: Boron or Aluminum?

• Boron, because it is smaller

• Boron, because it has more protons

• Aluminum, because it has fewer electrons

• Aluminum, because it is larger