Question:
The atomic numbers of four elements A, D, E, G are 4, 7, 8, 12 respectively. The decreasing order of electronegativity of these elements is
The atomic numbers of four elements A, D, E, G are 4, 7, 8, 12 respectively. The decreasing order of electronegativity of these elements is
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Among Period-2 elements, oxygen is more electronegative than nitrogen, while Be has much lower electronegativity.
Updated On: Jun 17, 2026
- E, D, A, G
- E, A, D, G
- D, G, E, A
- G, A, D, E
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The Correct Option is A
Solution and Explanation
Concept:
Electronegativity generally increases across a period and decreases down a group.
Step 1: Identify the elements.
\[ A=4=Be \] \[ D=7=N \] \[ E=8=O \] \[ G=12=Mg \]
Step 2: Compare electronegativities.
Approximate values: \[ O > N > Be > Mg \]
Step 3: Write decreasing order.
\[ \boxed{E>D>A>G} \]
Step 1: Identify the elements.
\[ A=4=Be \] \[ D=7=N \] \[ E=8=O \] \[ G=12=Mg \]
Step 2: Compare electronegativities.
Approximate values: \[ O > N > Be > Mg \]
Step 3: Write decreasing order.
\[ \boxed{E>D>A>G} \]
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