Determine the number of valence electrons in an atom of each element. b. Cs

Verified step by step guidance

1. Identify the element in question, which is Cesium (Cs).
2. Locate Cesium on the periodic table. It is in Group 1, which is also known as the alkali metals group.
3. Recall that elements in Group 1 have one valence electron.
4. Understand that the valence electrons are the electrons in the outermost shell of an atom, which are important for chemical bonding.
5. Conclude that Cesium (Cs) has 1 valence electron.

Key Concepts

Valence Electrons

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding. The number of valence electrons determines an element's reactivity and its ability to form bonds with other elements. For main group elements, the number of valence electrons corresponds to the group number in the periodic table.

Periodic Table

The periodic table organizes elements based on their atomic number and electron configuration. Elements in the same group (column) have similar chemical properties and the same number of valence electrons. Understanding the layout of the periodic table is essential for predicting the behavior of elements, including their bonding and reactivity.

Cesium (Cs)

Cesium (Cs) is an alkali metal located in Group 1 of the periodic table. Alkali metals have one valence electron, which they readily lose to form positive ions. This characteristic makes cesium highly reactive, especially with water, and is crucial for understanding its chemical behavior and applications.