Based on formal charge, what is the best Lewis structure for the cyanate ion, NCO¯? Select the correct answer below: © :N=C-O: [:N=C=0 | :N-C=O ]¯ [:N-C-0:
Formal Charges
Formal charges have an important role in organic chemistry since this concept helps us to know whether an atom in a molecule is neutral/bears a positive or negative charge. Even if some molecules are neutral, the atoms within that molecule need not be neutral atoms.
Polarity Of Water
In simple chemical terms, polarity refers to the separation of charges in a chemical species leading into formation of two polar ends which are positively charged end and negatively charged end. Polarity in any molecule occurs due to the differences in the electronegativities of the bonded atoms. Water, as we all know has two hydrogen atoms bonded to an oxygen atom. As oxygen is more electronegative than hydrogen thus, there exists polarity in the bonds which is why water is known as a polar solvent.
Valence Bond Theory Vbt
Valence bond theory (VBT) in simple terms explains how individual atomic orbitals with an unpaired electron each, come close to each other and overlap to form a molecular orbital giving a covalent bond. It gives a quantum mechanical approach to the formation of covalent bonds with the help of wavefunctions using attractive and repulsive energies when two atoms are brought from infinity to their internuclear distance.
![Use the table below to answer the question that follows.
Period
1
1
1
1s1
Group
H
2
3
Li 4 Be
2
2s1 2s2
11 Na 12 Mg
3
3s¹ 3s²
3
4
5
Electron Configuration Table
6
7
8
9
10
11
13
14 15
18
2 He
1s²
16
17
09
F10 Ne
5 B 6 C7 N 8
2s22p2s22p2 2s22p32s22p4 2s22p52s22p6
13 A 14 Si 15 P 16 S 17 C 18 Ar
3s23p 3s23p2 3s23p3 3s23p4 3s23p5 3s23p6
12
4
5
6
19 K 20 Ca 21 SC 22 Ti 23 V 24 Cr 25 Mn 26 Fe 27 Co 28 Ni 29 Cu 30 Zn 31 Ga 32 Ge 33 As 34 Se 35 Br 36 Kr
4s¹ 4s² 4s23d¹ 4s23d² 4s23d³ 4s¹3d5 4s23d5 4s23d 4s23d7 4s23d8 4s13d10 4s23d10 4s23d104p¹ 4s23d104p² 4s23d104p3 4s23d104p 4s23d104p5 4s23d104p
37 Rb 38 Sr 39 Y 40 Zr 41 Nb 42 Mo 43 Tc 44 Ru 45 Rh 46 Pd 47 Ag 48 Cd 49 In 50 Sn 51 Sb 52 Te 53 | 54 Xe
5s1 5s² 5s24d¹ 5s24d² 5s14d 5s14d5 5s14d 5s14d 5s14d8 4d10 5s14d10 5s24d10 5s24d105p1 5s240105p² 5s24d105p3 5s240105p4 5s24d105p5 5s240105p6
55 Cs 56 Ba 57 La 72 Hf 73 Ta 74 W 75 Re 76 Os 77 Ir 78 Pt 79 Au 80 Hg 81 TI 82 Pb 83 Bi 84 Po 85 At 86 Rn
6s2414 6s24f14 6s24f14 6s24f14 652414 6s2414
6s 6s² 6s25d¹ 6s24145d² 6s24145d³ 6s241450 65241450 6524f45d 6s24f45d 6s141450 651445010 65244510 5106p1 5d106p2 5d106p3 5d106p4 50106p5 50106p6
*
87
**
7
Fr 88 Ra 89 Ac 104 Rf 105 Db 106 Sg 107 Bh 108 Hs 109 Mt 110 DS 111 Rg 112 Cn 113 Uut 114 FI 115 Uup 116 Lv 117 Uus 118 Uuo
7s1 7s2 7s26d1 7525460² 7s25460³ 7s251460 72514607s25460° 7s25146d 7s254675251460° 752546010
*
**
58 Ce 59 Pr 60 Nd 61 Pm 62 Sm 63 Eu 64 Gd 65 Tb 66 Dy 67 Ho 68 Er 69 Tm 70 Yb 71 Lu
6s24f2 6s24f3 6s24f4 6s24f5 6s24f6 6s24f7 6s24f75d² 6s24f9 6s24f10 6s24f11 6s24f12 6s24f13 6s24f14 6s24f45d1
90 Th 91 Pa 92 U 93 Np 94 Pu 95 Am 96 Cm 97 Bk 98 Cf 99 Es 100 Fm 101 Md 102 No 103 Lr
7s26d2 7s25f26d² 7s25f36d² 7s25f4 6d 7s25f6 7s25f7 7s25f76d 7s25f86d 7s25f10 7s25f11 7s25f12 7s25f13 7s25f14 7s25f146d](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdf5d925f-4988-4fb2-b998-50155341eb55%2F26f2cc7c-81de-45a6-adca-8eea88c9f1f9%2Fj1wef36_processed.jpeg&w=3840&q=75)
![Atomic
number
1
H
1s¹
Name
Outer electron
configuration
Based on formal charge, what is the best Lewis structure for the cyanate ion, NCO¯?
Select the correct answer below:
Ο
:N=C-Ô:
:N-C=Ö
0
[ :N-C-0:
:]¯
! FEEDBACK](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdf5d925f-4988-4fb2-b998-50155341eb55%2F26f2cc7c-81de-45a6-adca-8eea88c9f1f9%2Fa7cnnlc_processed.jpeg&w=3840&q=75)
![](/static/compass_v2/shared-icons/check-mark.png)
Step by step
Solved in 4 steps with 3 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781305957404/9781305957404_smallCoverImage.gif)
![Chemistry](https://www.bartleby.com/isbn_cover_images/9781259911156/9781259911156_smallCoverImage.gif)
![Principles of Instrumental Analysis](https://www.bartleby.com/isbn_cover_images/9781305577213/9781305577213_smallCoverImage.gif)
![Organic Chemistry](https://www.bartleby.com/isbn_cover_images/9780078021558/9780078021558_smallCoverImage.gif)
![Chemistry: Principles and Reactions](https://www.bartleby.com/isbn_cover_images/9781305079373/9781305079373_smallCoverImage.gif)
![Elementary Principles of Chemical Processes, Bind…](https://www.bartleby.com/isbn_cover_images/9781118431221/9781118431221_smallCoverImage.gif)