MHTCET 22 Apr 2025 Shift 1 Paper

Concept:Alkali metals are the elements of Group 1 of the periodic table.Explanation:The alkali metals are lithium ($\mathrm{Li}$), sodium ($\mathrm{Na}$), potassium ($\mathrm{K}$), rubidium ($\mathrm{Rb}$), caesium ($\mathrm{Cs}$), and francium ($\mathrm{Fr}$).Lithium, potassium, and caesium all belong to Group 1, so they are alkali metals.Beryllium ($\mathrm{Be}$) belongs to Group 2, which contains alkaline earth metals, not alkali metals.Therefore, beryllium is the element that is not an alkali metal.Answer:Option C – Beryllium