4.3: Periodic Trends

Multiple Choice

How many valence electrons does carbon have?

• 4

• 5

• 6

• 7

Multiple Choice

USE THE PERIODIC TABLE

How many valence electrons does Phosphorus have?

• 31

• 5

• 15

• 4

Multiple Choice

Which element has a larger atomic radius, Sodium (Na) or Magnesium (Mg)?

• Sodium (Na)

• Magnesium (Mg)

• Both have the same atomic radius

• Cannot be determined

Multiple Choice

Which of the following elements has the smallest atomic radius?

• Helium (He)

• Neon (Ne)

• Argon (Ar)

• Xenon (Xe)

Multiple Choice

Why does Fluorine (F) have a smaller atomic radius than Lithium (Li)?

• Because Fluorine has fewer protons than Lithium

• Because Fluorine has more energy levels than Lithium

• Because Fluorine has a higher nuclear charge, pulling electrons closer

• Because Lithium is a gas at room temperature

Multiple Choice

Which of the following will have a lower ionization energy than Scandium (Sc)?

• Helium (He)

• Titanium (Ti)

• Calcium (Ca)

• Magnesium (Mg)

Multiple Choice

Which of the following will have a higher electronegativity than arsenic (As)?

• Carbon (C)

• Neon (Ne)

• Antimony (Sb)

• Germanium (Ge)

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

In the halogen family, which element is the most electronegative?

• iodine, I

• fluorine, F

• chlorine, Cl

• helium, He

Multiple Choice

Which of the following elements is the most electronegative?

• Hydrogen, H

• Aluminum, Al

• Oxygen, O

• Cesium, Cs

Multiple Choice

As you look down a group, ionic radius

• increases

• decreases

Multiple Choice

Which particle has the larger radius?

• K

• K⁺

Multiple Choice

Which particle has the larger radius?

• F

• F^-