Periodic Trends Quiz D

As you move down a group, atomic radius  

• increases because you add more neutrons

• decreases because you add more protons

• increases because you add more energy levels

• decreases because you add more energy levels

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

• Ar
• He
• Kr
• Rn

As you move across the periodic table from left to right, the atomic radius  

• decreases because the number of protons increases, so attraction to electrons increases

• decreases because the number of energy levels decreases

• increases because the number of electrons increases

• increases because the atomic mass increases

The atom with the largest atomic radius is - 

• K
• Kr
• Fe
• Fe

The element with the smallest ionization energy is - 

• Rn
• Cs
• Os
• Tm

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

What is the name of group 1A

• Alkaline Earth Metals
• Boron Family
• Alkali Metals
• Halogen Family

Electronegativity is...

• the ability of an atom to attract/ accept 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. 

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

• decreases, increases 
• increases, increases
• increases, decreases 
• stays the same, increases

Atoms that have a high electronegativity, _______________.

• give up their electrons more easily.
• hold on to their electrons more tightly.
• have more electron shells.