Q
QuestionChemistry

How many valence electrons are there in the valence shell of sodium, Na (atomic number 11)? A. three B. one C. two D. four
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Step 1
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Step 2
: Determine the electron configuration of sodium

- The electron configuration for sodium is $$1s^{2} 2s^{2} 2p^{6} 3s^{1}
- Sodium's atomic number is 11, which means it has 11 total electrons

Final Answer

Explanation: Sodium (Na) has one valence electron in its 3s orbital, which determines its chemical behavior and ability to form bonds. This single valence electron is easily lost, making sodium a highly reactive alkali metal.

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