Question:
Which pair is different from the others?
Which pair is different from the others?
Show Hint
Diagonal pairs show unusual similarities across groups.
Updated On: Apr 23, 2026
- Li — Mg
- B — Al
- Na — K
- Ca — Mg
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The Correct Option is A
Solution and Explanation
Concept:
Diagonal relationship in periodic table
Step 1: Li–Mg and B–Al show diagonal similarity.
Step 2: Ca–Mg belong to same group.
Step 3: Na–K also belong to same group.
Step 4: Only Li–Mg is a diagonal pair (unique).
Conclusion:
Different pair = Li–Mg
Step 1: Li–Mg and B–Al show diagonal similarity.
Step 2: Ca–Mg belong to same group.
Step 3: Na–K also belong to same group.
Step 4: Only Li–Mg is a diagonal pair (unique).
Conclusion:
Different pair = Li–Mg
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