You simply need to draw all the diagrams of both kinds (Bohr and Lewis) for the first 20 elements.

Unshared, or lone, electron pairs play an important role in determining the chemical and physical properties of organic compounds. Thus, it is important to know which atoms carry unshared pairs. Use the structural formulas below to determine the number of unshared pairs at each designated atom. Be sure your answers are consistent with the formal charges on the formulas. H₂C H₂ b Hc N CH2 The number of unshared pairs at atom a is The number of unshared pairs at atom b is The number of unshared pairs at atom c is The number of unshared pairs at atom a is 1 v The number of unshared pairs at atom b is Ov The number of unshared pairs at atom c is 1.

In the following questions, consider the carbanion formed by the arrow pushing below: он | HC-C-R H ཋཙམཏིཏཡརིཡཐཱ པཱལཾ ཏིཡཏིཡ, B: H C-C-R Н Question 7 2 pts Below are a proposed resonance structure of the carbanion and rules of resonance. Which rules, if any, does the resonance structure break? (Select all that apply.) Ο Η | │ C-C-R H The formal charge of the molecule cannot change. ☐ Single (sigma) bonds cannot be broken. With the exception of carbocations, octet rules must be satisfied. ☐ All of the above rules are satisfied.