Elements in a period have similar chemical and physical properties.
Correct! Elements in a group have similar chemical and physical properties. The periodic table is divided into columns called groups or families, and elements within the same group share certain characteristics. This is because elements within a group have the same number of valence electrons, which are responsible for determining the chemical behavior of an element. Consequently, elements in the same group tend to react similarly with other elements and exhibit similar physical properties, such as boiling points, melting points, and atomic radii.
