Ionization Energy

Multiple Choice

Which atom has the largest atomic radius?

• potassium

• rubidium

• francium

• cesium

Multiple Choice

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

Multiple Choice

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

Multiple Choice

Which periodic group has the smallest atomic radius?

• Alkali metals
• Halogens
• Noble Gases
• Transition metals

Multiple Choice

What is ionization energy?

• The energy needed to add a proton to an atom

• The energy needed to remove a valence electron

• The energy needed to split an atom

• The energy needed to form a covalent bond

Multiple Choice

Why do cations have low ionization energy?

• They have more protons than electrons

• They easily lose their extra electrons

• They have a large atomic radius

Open Ended

Compare the ionization energy of cations and anions. How does this difference affect their ability to lose or gain electrons?

Multiple Choice

Which of the following statements about ionization energy trends in the periodic table is correct?

• Ionization energy decreases left to right across a period and down a group

• Ionization energy increases left to right across a period and increases going up a group

Multiple Choice

Based on the diagram, which region of the periodic table generally has the highest ionization energy?

• Top right

• Bottom left

• Top left

• Bottom right

Open Ended

How do you think understanding periodic trends can help you predict the properties of unknown elements?