Review: Classes, Trends, and History

Electronegativity is...

• how good an atom is at attracting electrons
• the ability of an atom to lose electrons
• the energy required to remove an electron from a specific atom
• how easy it is to make friends. 

Ionization energy is...

• the energy required to add an electron to a specific atom
• how much energy it takes to remove an electron from an atom
• the energy required to shield the outer electrons from the nucleus
• a measure of the ability of an atom to attract electrons

Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

As you move from left to right on the periodic table, the number of valence electrons.......

• Increases

• Decreases

• Remains the same

As you move down a group on the periodic table, the number of valence electrons....

• Increases

• Decreases

• Remains the same

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

• Aluminum (Al)
• Chlorine (Cl)

Which element has the greatest electronegativity: Nitrogen (N) or Arsenic (As)?

• Nitrogen (N)
• Arsenic (As)

The atom with the largest atomic radius in Group 18 is - 

• Ar
• He
• Kr
• Rn

The element with the largest electronegativity in the halogens is - 

• At
• F
• Cl
• Br

The element with the lowest electronegativity in Period 3 is -

• Na

• Cl

• Ar

• Mg