Question:
Which of the following elements has highest electronegativity?
Which of the following elements has highest electronegativity?
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Smaller atoms attract electrons more strongly. Electronegativity $\propto \frac{1}{\text{Atomic Radius}}$.
Updated On: Apr 30, 2026
- Sr
- Ca
- Mg
- Be
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Group Trend
The elements Be, Mg, Ca, and Sr all belong to Group 2 (Alkaline Earth Metals).
Step 2: Electronegativity Rule
Electronegativity decreases as you move **down** a group due to increased atomic size and shielding effect.
Step 3: Order
The order in Group 2 is: $Be>Mg>Ca>Sr$.
Step 4: Conclusion
Beryllium (Be), being the smallest and topmost element, has the highest electronegativity.
Final Answer:(D)
The elements Be, Mg, Ca, and Sr all belong to Group 2 (Alkaline Earth Metals).
Step 2: Electronegativity Rule
Electronegativity decreases as you move **down** a group due to increased atomic size and shielding effect.
Step 3: Order
The order in Group 2 is: $Be>Mg>Ca>Sr$.
Step 4: Conclusion
Beryllium (Be), being the smallest and topmost element, has the highest electronegativity.
Final Answer:(D)
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