Which alkali metal is known for its vigorous reaction with water? (2022)

Which alkali metal is known for its vigorous reaction with water? (2022)

Step 1: Identify the group of elements called alkali metals. These are found in Group 1 of the periodic table.
Step 2: Recall that alkali metals include lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
Step 3: Understand that alkali metals react with water, but some react more vigorously than others.
Step 4: Focus on potassium (K), which is known for its vigorous reaction with water.
Step 5: When potassium reacts with water, it produces potassium hydroxide (KOH) and hydrogen gas (H2).
Step 6: Conclude that potassium is the alkali metal known for its vigorous reaction with water.

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