Periodicity A Level Quiz

What trend is observed in the atomic radius as you move from left to right across a period in the periodic table?

• Fluctuates

• Increases

• Decreases

• Remains constant

Which of the following elements has the largest atomic radius: Li, Na, K, or Rb?

• K

• Li

• Rb

• Na

Define ionization energy and explain how it changes as you move down a group in the periodic table.

• The ionization energy increases

• The ionization energy remains constant

• The ionization energy becomes negative

• The ionization energy decreases

Which of the following elements has the highest ionization energy: Mg, Al, Si, or P?

• Mg

• P

• Si

• Al

Explain the trend in ionization energy as you move from left to right across a period in the periodic table.

• Ionization energy fluctuates

• Ionization energy decreases

• Ionization energy increases

• Ionization energy remains constant

What is the general trend in melting point as you move from left to right across a period in the periodic table?

• Remains constant

• Increases

• Decreases

• Fluctuates

Which of the following elements has the highest melting point: Na, Mg, Al, or Si?

• Na

• Si

• Mg

• Al

Describe the reactivity trend of alkali metals as you move down the group in the periodic table.

• Reactivity remains constant

• Reactivity decreases

• Reactivity fluctuates

• Reactivity increases

Explain the reactivity trend of halogens as you move down the group in the periodic table.

• Reactivity becomes unpredictable

• Reactivity increases

• Reactivity decreases

• Reactivity remains constant

What is the general trend in reactivity as you move from left to right across a period in the periodic table?

• Reactivity decreases

• Reactivity becomes unpredictable

• Reactivity remains constant

• Reactivity increases