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QuestionChemistry

"Which Lewis structure below correctly represents KCl? A) :K::Cl: B) one pa C) K:Cl: D) KI Cil cion E) none of the above"
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Answer

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Step 1:
Let's solve this step by step:

Step 2:
: Understand the Chemical Bonding

- KCl is an ionic compound formed between potassium (K) and chloride (Cl) - In ionic compounds, electrons are transferred completely from the metal to the nonmetal - Potassium is a Group 1 metal that loses one electron - Chlorine is a Group 17 nonmetal that gains one electron

Step 3:
: Electron Configuration Analysis

- Potassium (K): $$1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{1}
- Chlorine (Cl): 1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{5}

Step 4:
: Ion Formation

- K loses its outer electron to become $$K^{+}
- Cl gains one electron to become Cl^{-}

Step 5:
: Evaluate the Lewis Structures

- Option C $$K:Cl:$$ shows the correct ionic representation
- Option B "one pa" is not a valid Lewis structure - Option D "KI Cil cion" is not a valid chemical notation - Option E "none of the above" is not correct

Final Answer

C) K:Cl: is the correct Lewis structure for potassium chloride, representing the ionic bond between K^{+} and Cl^{-}.