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

Practice Questions

Q1
Which alkali metal is known for its vigorous reaction with water? (2022)
  1. Lithium
  2. Sodium
  3. Potassium
  4. Rubidium

Questions & Step-by-Step Solutions

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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