C02.6 Periodicity Pt 2 Lecture

You will need your periodic table.

Multiple Select

Which of these cause the electrostatic force between charges to increase? pick two

• Increasing the charge of the particles

• Decreasing the distance between the charges

• Decreasing the charge of the particles

• Increasing the distance between the charges

Multiple Choice

Based on the periodic table trends, which direction does atomic/ionic radius increase?

• From right to left and top to bottom

• From left to right and bottom to top

• From top to bottom and left to right

• From right to left and bottom to top

Multiple Choice

Do you have your periodic table out?

• Yes

• No

​Answer the Ionization Energy Example Problems

Use your periodic table and notes.

Poll

When you have answered the examples, click ready.

• Ready

• Need more time

Multiple Choice

Which element is more likely to lose an electron?

• Element X

  IE = 450 kJ/mol

• Element Y

  IE = 325 kJ/mol

Open Ended

Which of these period 3 elements has a higher ionization energy, sodium or phosphorous?

(Answer in a complete sentence.)

Multiple Choice

Which element has a higher ionization energy, fluorine or iodine?

• F

• I

Reorder

Put these elements in order by increasing ionization energy. (Low to high, L to R)

• Sr

• Ca

• Si

• P

• O

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

Which of the following statements best explains the trend in ionization energy across a period in the periodic table?

• Ionization energy increases from left to right due to increasing nuclear charge.

• Ionization energy decreases from left to right due to decreasing atomic size.

• Ionization energy remains constant across a period.

• Ionization energy decreases due to increasing electron shielding.

​Answer the Electron Affinity Example Problems

Use your periodic table and notes.

Poll

When you have answered the examples, click ready.

• Ready

• Need more time

Multiple Choice

Which one has a higher electron affinity, Cs or Hg?

• Cs

• Hg

Multiple Choice

Which one has a higher electron affinity, Sr or P?

• Sr

• P

Multiple Choice

Which element is more likely to gain an electron?

• Element W

  EA = -450 kJ/mol

• Element Z

  EA = -325 kJ/mol

​Self-Pace Mode Activate

Use your notes to answer the following questions.

Multiple Select

Which of the following statements about the group trend in ionization energy are correct? (Pick 2)

• Ionization energy decreases down a group.

• Atoms get smaller down a group.

• Valence electrons move closer to the nucleus down a group.

• Elements further down a group lose electrons easier.

Multiple Choice

Which elements are most likely to lose electrons and form positive ions according to the periodic table?

• Li and Be

• O and F

• Ne and He

• C and N

Multiple Choice

Why are alkali metals the most reactive metals according to ionization energy trends?

• They have the lowest ionization energies.

• They have the highest ionization energies.

• They have full electron shells.

• They are nonmetals.

Multiple Choice

Which of the following statements is true about electron affinity.

• as electron affinity increases the likelihood that an electron will be gained also increases

• as electron affinity increases the likelihood that an electron will be gained decreases

• electron affinity has no affect on the gaining of electrons only the amount of energy change

Multiple Choice

Which of the following statements is true about the period trend for electron affinity.

• electron affinity decreases L to R across a row

• electron affinity increases L to R across a row

• electron affinity does not change across a row

• electron affinity goes up and down across a row

Open Ended

How does understanding Coulomb's Law help you explain trends in the periodic table?

Multiple Choice

Which elements are most likely to gain electrons and form negative ions according to the periodic table?

• Li and Be

• O and F

• Ne and He

• C and N

Multiple Choice

Which element has the strongest attraction to shared electrons?

• Na

• H

• O

• Se

• Al

Multiple Choice

Which element is the most reactive?

• Sodium

• Magnesium

• Aluminum

• Zinc

The End

You can exit the presentation.