6.2 Classification of Elements

Front

What defines the s-block elements in the periodic table?

Back

The s-block elements are defined by having their outermost electrons in the s orbital, which includes groups 1 and 2, as well as hydrogen and helium.

Front

What is the electron configuration of Neon (Ne)?

Back

The electron configuration of Neon is 1s² 2s² 2p⁶.

Front

How many valence electrons does sulfur (S) have?

Back

Sulfur has 6 valence electrons.

Front

What are metalloids?

Back

Metalloids are elements that have properties of both metals and nonmetals, typically found along the staircase line on the periodic table.

Front

Which element is the heaviest metalloid?

Back

Polonium is the heaviest metalloid.

Front

What is the significance of valence electrons in determining an element's chemical properties?

Back

Valence electrons determine how an element reacts chemically, including its bonding behavior and reactivity.

Front

What is the general trend in reactivity for s-block elements?

Back

Reactivity increases as you move down the group in the s-block.

Front

What is the electron configuration for cesium (Cs)?

Back

The electron configuration for cesium is [Xe] 6s¹.

Front

How do you identify the group number of an element based on its valence electrons?

Back

The group number corresponds to the number of valence electrons for main group elements.

Front

What is the role of the periodic table in classifying elements?

Back

The periodic table organizes elements based on their atomic number, electron configurations, and recurring chemical properties.