객관식
Which of the following statements correctly describes the Lewis dot structure of the NO_2^+ ion?
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11. Bonding & Molecular Structure
Lewis Dot Structures: Ions
객관식
Which of the following statements correctly describes the Lewis dot structure of the nitrite ion, NO_2^-?
A
It contains two oxygen atoms bonded to nitrogen, both with single bonds, and two lone pairs on nitrogen.
B
It contains two oxygen atoms bonded to nitrogen, both with double bonds, and no lone pairs on nitrogen.
C
It contains two oxygen atoms bonded to nitrogen, with one double bond and one single bond, and a lone pair on nitrogen.
D
It contains one oxygen atom bonded to nitrogen with a triple bond and the other with a single bond.
검증된 단계별 안내1
Step 1: Determine the total number of valence electrons available for the nitrite ion (NO_2^-). Nitrogen has 5 valence electrons, each oxygen has 6, and the negative charge adds 1 extra electron. So, total valence electrons = 5 + 2 \(\times\) 6 + 1.
Step 2: Draw a skeletal structure with nitrogen as the central atom bonded to two oxygen atoms. Connect nitrogen to each oxygen with single bonds initially.
Step 3: Distribute the remaining valence electrons to satisfy the octet rule for the oxygen atoms first, placing lone pairs around them.
Step 4: Check the formal charges on each atom. To minimize formal charges, convert one of the nitrogen-oxygen single bonds into a double bond, and place a lone pair on nitrogen.
Step 5: Confirm that the final Lewis structure has one nitrogen-oxygen double bond, one nitrogen-oxygen single bond, a lone pair on nitrogen, and that the overall charge matches the ion's charge (-1).
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