Chemistry Quiz: Atomic Radius and Ionization Energy

What is the property that describes the size of an atom?

• Atomic radius

• Atomic mass

• Atomic number

• Atomic weight

How is the atomic radius of an atom determined?

• By counting the number of electrons

• By dividing the distance between two nuclei by two

• By measuring the mass of the atom

• By calculating the number of protons

How does the atomic radius trend across a period on the periodic table?

• Increases

• Remains constant

• Decreases

• Fluctuates randomly

What is the property that measures the energy required to remove an electron from an atom?

• Electronegativity

• Atomic radius

• Ionization energy

• Electron affinity

What is an ion?

• An atom with only protons

• An atom with no electrons

• An atom with a positive or negative charge

• A neutral atom

How is ionization energy measured?

• In grams per mole

• In joules per atom

• In kilojoules per mole

• In newtons per electron

Where are the highest ionization energies found on the periodic table?

• At the bottom

• On the right side

• On the left side

• In the middle

Why are ionization energies lower in groups one and two?

• Due to lower electron count

• Due to smaller atomic radius

• Due to higher nuclear charge

• Due to electrons being farther from the nucleus

What happens to ionization energy as you go down a group?

• Increases

• Remains constant

• Decreases

• Fluctuates randomly

What is the term for the energy required to remove a second electron from an ion?

• Noble gas energy

• Atomic energy

• Second ionization energy

• Electron affinity