Periodic Table and Trends Practice

Front

What is ionization energy?

Back

The amount of energy required to remove an electron from an isolated atom or molecule.

Front

What is the correct decreasing order of ionization energy for Li, Na, K, Cs?

Back

Li > Na > K > Cs.

Front

Why are Group 18 elements stable and unreactive?

Back

Their valence electron shell has reached a full octet.

Front

Which atom has the largest atomic radius: potassium, rubidium, francium, or cesium?

Back

Francium.

Front

How many energy levels does an atom of Chlorine have?

Back

3.

Front

What is the trend of metal reactivity in the periodic table?

Back

Metal reactivity increases to the left and down.

Front

What is the trend of nonmetal reactivity in the periodic table?

Back

Nonmetal reactivity increases to the right and up.

Front

What is the atomic radius trend in the periodic table?

Back

Atomic radius increases down a group and decreases across a period.

Front

What is the significance of a full valence shell?

Back

Atoms with a full valence shell are generally stable and less reactive.

Front

What happens to ionization energy as you move down a group in the periodic table?

Back

Ionization energy decreases.