General Science - Physics (Basics)
Which of the following elements is an alkaline earth metal?
Which of the following elements is an alkaline earth metal?
medium Q7 of 15
Step-by-Step Solution
Step 1: Identify alkaline earth metals
Alkaline earth metals belong to Group 2 of the periodic table.Step 2: Match elements to groups
Calcium is in Group 2, making it an alkaline earth metal. Potassium and Sodium are Group 1 alkali metals. Aluminium is a post-transition metal in Group 13.Final Answer:
Calcium → Option BQuick Check:
Alkaline earth metal = Calcium ✅
Quick Trick: Group 2 elements like Calcium are alkaline earth metals.
Common Mistakes:
- Confusing alkali metals (Group 1) with alkaline earth metals (Group 2).
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