Unit Review Chemistry

Which atom has the largest radius?

• F
• Cl
• Br
• I

Which atom has the highest ionization energy?

• Be
• Mg
• Ca
• Sr

All of the following have the same number of electrons. Which is the largest?

• Na⁺¹
• Mg⁺²
• F^-1
• They have the same size.

The element that has the highest electronegativity is:

• Li
• Be
• F
• Ne

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

• Carbon (C)
• Neon (Ne)
• Antimony (Sb)
• Germanium (Ge)

As you move down the a group, atoms get bigger because

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

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.

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

The atom with the largest atomic radius in Group 18 is  

• Ar
• He
• Kr
• Rn

Which statement correctly and completely identifies a trend?

• Atomic radius decreases across a period and increases down a group.
• Electronegativity decreases across a period and decreases down a group.
• Ionization energy increases across a period and increases down a group.
• Ionic radius increases across a period and increases down a group.