Which of the following element pairs will form an ionic bond?
Which of the following element pairs will form an ionic bond?
Show Hint
- P
- Q
- R
- S
The Correct Option is C
Solution and Explanation
Step 1: Understanding Ionic Bonding:
An ionic bond is formed by the complete transfer of electrons from a metallic element (electropositive) to a non-metallic element (electronegative).
Step 2: Analyzing the Pairs:
Pair P: Both Group 1 and Group 2 are metals. Two metals do not form ionic bonds with each other.
Pair Q: Elements of Group 14 (like Carbon) and Group 16 (like Oxygen) are both non-metals and typically form covalent bonds.
Pair R: Group 2 (Metals) and Group 17 (Non-metals/Halogens) have a high difference in electronegativity, leading to ionic bond formation (e.g., MgCl_2).
Pair S: Group 18 consists of noble gases which are chemically inert and rarely form bonds.
Step 3: Conclusion:
The combination of a metal from Group 2 and a non-metal from Group 17 results in a stable ionic compound.
Step 4: Final Answer:
The correct pair is R.
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