CH3(CH2)3CH(CH3)2 how do i do the Lewis structure

CH3(CH2)3CH(CH3)2 how do i do the Lewis structure?

The correct answer and explanation is :

To draw the Lewis structure of CH₃(CH₂)₃CH(CH₃)₂, follow these steps:

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✅ Correct Answer:

This molecule is 2-methylhexane, a branched alkane with the molecular formula C₇H₁₆. Its Lewis structure involves single covalent bonds (sigma bonds) between carbon (C) and hydrogen (H) atoms.

Here’s how it’s structured:

        CH3
         |
CH3—CH2—CH2—CH—CH3
                 |
                CH3

Each carbon atom forms four covalent bonds, and each hydrogen forms one. The Lewis structure shows all atoms and bonds, especially bonding electrons (lines) and lone pairs (if any; in this case, there are no lone pairs on C or H atoms).

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🧠 Step-by-Step Explanation (300+ words):

The first step in constructing the Lewis structure of an organic molecule is recognizing the structure implied by the condensed formula. The given formula is:

CH₃(CH₂)₃CH(CH₃)₂

Break it down:

1. CH₃ = methyl group (1 carbon)
2. (CH₂)₃ = three CH₂ units = 3 carbon atoms in a chain
3. CH(CH₃)₂ = a carbon bonded to two methyl groups (branch)

Putting this together:

• The backbone is a chain of 5 carbon atoms: CH₃–CH₂–CH₂–CH–CH₃
• One methyl branch (CH₃) is attached to the second carbon from the end, making it 2-methylhexane

Now, draw the Lewis structure:

1. Draw all 7 carbon atoms: Make a straight chain of 6 (for hexane), and branch the 7th carbon (methyl group) off the second carbon from the end.
2. Add hydrogen atoms: Each carbon makes 4 total bonds. If a carbon is bonded to 3 other atoms, it gets 1 hydrogen. If bonded to 1, it gets 3 hydrogens, etc.
3. Only single bonds: Because alkanes are saturated hydrocarbons.

Example for central carbon (the branched one):

• The branched carbon is bonded to:
• 1 CH₂ group (left)
• 1 CH₃ group (right)
• 2 CH₃ groups above and below

Thus, 4 total bonds → stable.

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⚠️ Important:

• Hydrogen atoms are not shown as lone pairs in Lewis structures, just as single bonds (lines).
• No double/triple bonds or lone pairs here because alkanes only have single bonds.

This is a saturated hydrocarbon, so the Lewis structure is simple and shows complete octets for all carbon atoms.