What term refers to the elements found in vertical columns of the periodic table, where elements in the same group share chemical properties?

• A. Periods
• B. Alkali metals
• C. Group
• D. Homogeneous

Answer: (C)

Elements in vertical columns on the periodic table are grouped together because they share similar chemical properties, a result of having the same number of valence electrons which governs how they bond and react. This vertical collection is called a Group. So the best answer is Group. Periods are the horizontal rows and show trends across the table, not the shared properties within a column. Alkali metals describe one specific group, not the general term for all vertical columns. Homogeneous refers to uniform composition, not the organization of elements by property.