Chap. 5 Periodic Trends

Multiple Choice

Based on the last slides, as you go across a period, does the atomic radius get smaller or larger?

• Smaller

• Larger

• Stays the same

Multiple Choice

What is the trend for ionic radius as you go down a group?

• It fluctuates

• It increases

• It remains the same

• It decreases

Multiple Choice

How does atomic/ionic radius change down a group?

• It remains the same

• It increases

• It fluctuates

• It decreases

Multiple Choice

Which of the following will have a larger radius than Zinc (Zn)?

• Gallium
• Aluminum
• Magnesium
• Strontium

Multiple Choice

Ionization energy is the...

• energy needed to remove an outermost electron.

• ability of an atom to attract electrons from another atom.

Multiple Choice

Which element has the greatest ionization energy: Aluminum (Group 13) or Chlorine (Group 17)?

• Aluminum (Al)
• Chlorine (Cl)

Multiple Choice

What elements do you expect to have a high electron affinity?

• Elements that form cations

• Elements that form anions

• Transition metals

Multiple Choice

Which element has the highest electron affinity?

• Fluorine

• Oxygen

• Helium

• Lithium

Electronegativity

• Measures the ability of an atom in a chemical compound to attract electrons from another atom in the compound.

• Think about what elements attract electrons.

• The highest value is 4.0 and fluorine is the most electronegative element.

Electronegativity

• Increases as you move across the periodic table.

• Group 1 and 2 metals are the least electronegative elements and tend to lose electrons when forming ions.

• Nitrogen, oxygen, and halogens are the most electronegative and strongly attract electrons when in compounds.

• Decreases or stays the same moving down a group.

Multiple Choice

What elements have the highest Electronegativity?

• Halogens (group 17)

• Alkali Metals (Group 1)

• Alkaline-earth Metals (group 2)

• Noble gases (group 18)

Multiple Choice

Which of the following is the least electronegative element?

• oxygen
• potassium
• fluorine
• nitrogen

Multiple Choice

Which has the greater electronegativity?
Nitrogen or Carbon?

• Carbon

• Nitrogen

​Final practice questions!

Multiple Choice

If an element has a higher ionization energy, it will be _________ to remove an electron, meaning it will more likely to _________ an electron during a chemical reaction.

• easier, lose

• easier, gain

• harder, lose

• harder, gain

Multiple Choice

This element has the lowest electron affinity

• magnesium

• sodium

• silicon

• sulfur

Multiple Choice

Which of the following elements has the smallest radius?

• Mg
• Al
• Si
• K

Multiple Choice

Which element has the highest ionization energy?

• helium

• nitrogen

• oxygen

• hydrogen

Multiple Choice

What block is represented by the color green on the left hand side?

• p-block

• d-block

• s-block

• f-block

Multiple Choice

• Periods
• Groups

Multiple Choice

Which color is D block

• Red

• Blue

• Yellow

• Green

Multiple Choice

Which family is the most reactive Metals

• Alkali Metals (Group 1)

• Alkaline Earth Metals (Group 2)

• Transition Metals (Group 3-12)

• Halogens (Group 17)

• Noble Gases (Group 18)

Multiple Choice

Identify the element based on the following electron configuration: 5p⁴

• Molybdenum (Mo)

• Tellurium (Te)

• Chromium (Cr)

• Selenium (Se)