Question

question 3 (1 point) what is the best lewis structure for oncl? (a) :o—n—cl: (b) :o—n—cl: (c) :o=n—cl: (d) :o—n=cl: (e) :o=n=cl: a) a b) b c) c d) d e) e

Explanation:

Step1: Calculate valence electrons

O has 6, N has 5, Cl has 7. Total = 6 + 5+7 = 18 valence - electrons.

Step2: Analyze formal - charges

For option (a):
Formal charge on O: 6 - 7=- 1; on N: 5 - 4 = 1; on Cl: 7 - 8=-1.
For option (b):
Formal charge on O: 6 - 7=-1; on N: 5 - 5 = 0; on Cl: 7 - 8=-1.
For option (c):
Formal charge on O: 6 - 6 = 0; on N: 5 - 4 = 1; on Cl: 7 - 8=-1.
For option (d):
Formal charge on O: 6 - 7=-1; on N: 5 - 5 = 0; on Cl: 7 - 7 = 0.
For option (e):
Formal charge on O: 6 - 6 = 0; on N: 5 - 5 = 0; on Cl: 7 - 6 = 1.

Step3: Select the best structure

The best Lewis structure has the lowest formal - charges. Option (d) has the most reasonable set of formal - charges.

Answer:

d) d