Periodic Trends

Ionization energy is the...

• energy needed to remove the outermost electron.
• ability of an atom to attract electrons from another atom.

Electronegativity is the...

• energy needed to remove the outermost electron.
• ability of an atom to attract electrons from another atom.

Which element has the smaller atomic radius: potassium (K) or bromine (Br)?

• potassium (K)
• bromine (Br)

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)

Which has the greater EN: 
Cl or Al?

• Cl
• Al

Which has the greater EN: 
N or C?

• C
• N

Which has the greater EN: 
H or F?

• H
• F

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

• Gallium
• Aluminum
• Magnesium
• Strontium

Based on electronegativity trends in the periodic table, which of the following is the most likely value for the electronegativity of silicon?

• 2.44
• 1.23
• 2.22
• 2.03