Periodic Trends

As you move down the periodic table atoms get bigger.  This is because ____________.

• The atoms have more mass.
• The atoms have more protons.
• The atoms have more energy levels
• The atoms have more nuetrons

As you move across the periodic table atoms tend to get smaller because, ______________.

• the atoms have more mass.
• the atoms have less mass
• the atoms have more protons.
• the atoms have less electrons.

Which atom has the largest atomic radius?

• potassium
• rubidium 
• francium
• cesium

In the alkali metals, which element has a larger atomic radius?

• lithium, Li

• sodium, Na

• potassium, K

• cesium, Cs

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

• Ar
• He
• Kr
• Rn

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

• Helium (He)
• Titanium (Ti)
• Calcium (Ca)
• Magnesium (Mg)

Which set of elements would have the most similar properties?

• 3 elements in the same period

• 3 elements in the same group

• 3 elements in different periods and different groups

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

• Ar
• He
• Kr
• Rn

Which has the greater EN: 
N or C?

• C
• N

Which has the greater EN: 
H or F?

• H
• F