Periodic Trends: Ionization Energy

Periodic Trends: Ionization Energy

by Linda Cannon

Poll

Have you watched this video clip?

Multiple Choice

Ionization energy is the _____ energy required to _______  one mole of electron from one mole of gaseous atom at ground state.

• maximum, remove

• minimum, remove

• maximum, add

• minimum, add

Multiple Choice

1. The ______the atomic radius, the ________the attraction, the _______the ionisation energy.

• smaller, stonger, higher

• bigger, weaker, higher

Multiple Choice

Across a period, Ionization energy ____a____

Down a group, ionisation energy ____b_____

• a : increase

  b: decrease

• a : increase

  b: increase

• a : decrease

  b: decrease

Multiple Choice

Which element has the greatest ionization energy: Aluminum (Al)    or    Chlorine (Cl)?

• Aluminum (Al)

• Chlorine (Cl)

Multiple Choice

Energy is required to remove an electron from the atom.

• True
• False
• Not sure

Multiple Choice

After the atom is ionised, it then requires more energy to remove a second electron because the second electron experiences less shielding from the nucleus.

• True
• False
• Not sure

Multiple Choice

Which of the following sequences corresponds to a correct trend in ionization energy?

• Cl > S > P > Al
• Sr > Ca > Mg > Be
• Rb > K > Na > Li
• Rb > Sr > I > Xe

Multiple Choice

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.

Multiple Choice

Which element has the greater ionization energy?

• Strontium
• Boron

Multiple Choice

Which element has the greater ionization energy?

• Lead
• Silicon

Multiple Choice

Put the following in order of increasing ionization energy:Neon, Lithium, Carbon

• Lithium, Carbon, Neon
• Carbon, Lithium, Neon
• Neon, Carbon, Lithium
• Lithium, Neon, Carbon

Multiple Choice

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

• Sodium, Boron, Oxygen
• Oxygen, Boron, Sodium
• Sodium, Oxygen, Boron
• Oxygen, Sodium, Boron

Multiple Choice

Which group on the periodic table is composed of inert (not reactive)  gases?

• alkali metals

• alkaline earth metals

• halogens

• noble gases

Multiple Choice

Francium (Fr) has the lowest ionization energy in Group 1 because - 

• it has the smallest number of valence electrons

• it has the greatest atomic mass

• it has the greatest number of protons, so it attracts its electrons the strongest

• its 1 valence electron is very far from the nucleus, so little energy is needed to remove it

Multiple Choice

When moving left to right across a period, the atomic size decreases.  This means the first IE ___________.

• increases

• decreases

• remains constant

• i am not sure

Multiple Choice

When going down a group, the atomic size increases. This means the first IE __________.

• increases

• decreases

• remains constant

• I am not sure

Multiple Choice

Which of the following factors will affect ionization energy:

• Atomic radius

• Effective nuclear charge

• Shielding effect

• All of the above