Periodic Table Review Questions

Front

What is an Alkali Metal?

Back

Alkali metals are the elements found in Group 1 of the periodic table, characterized by having one electron in their outermost shell. They are highly reactive and include elements like Lithium, Sodium, and Potassium.

Front

Which element is an example of an Alkali Metal?

Back

Sodium (Na) is an example of an Alkali Metal.

Front

What is the excited state electron configuration of Sodium (Na)?

Back

The excited state electron configuration of Sodium is 2-7-2.

Front

What determines the chemical properties of elements in the same group of the periodic table?

Back

Elements in the same group have similar chemical properties due to having the same number of valence electrons.

Front

Define Ionization Energy.

Back

Ionization energy is the energy required to remove an electron from an atom in its gaseous state.

Front

What is the trend of ionization energy across a period in the periodic table?

Back

Ionization energy generally increases across a period from left to right due to increasing nuclear charge.

Front

What is the trend of ionization energy down a group in the periodic table?

Back

Ionization energy generally decreases down a group due to increased distance of the outer electrons from the nucleus and increased electron shielding.

Front

What is the electron configuration of a neutral Sodium atom?

Back

The electron configuration of a neutral Sodium atom is 1-2-8-1.

Front

What is the significance of valence electrons?

Back

Valence electrons are the outermost electrons of an atom and are important for determining how an element will react chemically.

Front

What is the chemical formula for Oxygen gas?

Back

The chemical formula for Oxygen gas is O2.