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QuestionChemistry

What is the total number of valence electrons in a water molecule?
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Answer

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Step 1:
I'll solve this step-by-step following the LaTeX formatting guidelines precisely:

Step 2:
: Identify the atoms in a water molecule

- Water ($$H_{2}O$$) consists of two hydrogen atoms and one oxygen atom

Step 3:
: Determine valence electrons for hydrogen

- Total hydrogen valence electrons: $$1 \times 2 = 2$$ electrons
- Hydrogen (H) is in Group 1A

Step 4:
: Determine valence electrons for oxygen

- Total oxygen valence electrons: $$6 \times 1 = 6$$ electrons
- Oxygen (O) is in Group 6A

Step 5:
: Calculate total valence electrons

- $$2 + 6 = 8$$ valence electrons
- Total valence electrons = Hydrogen electrons + Oxygen electrons

Final Answer

The water molecule (H_{2}O) contains 8 total valence electrons.