SSC MTS EXAM

Detailed explanation-1: -The alkali metals (Li, Na, K, Rb, Cs, and Fr) are the most reactive metals in the periodic table-they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.

Detailed explanation-2: -When a metal reacts with water, a metal hydroxide and hydrogen are formed. For example: Sodium reacts vigorously with water. Calcium reacts readily with water.

Detailed explanation-3: -Different metals have different reactivity with various mineral acids as the metals on top of the series react easily with acids while metals present at the bottom are unreactive to acids or water e.g. noble metals.