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How many valence electrons are present in sodium with atomic number 1 1 ?

How many valence electrons are present in sodium with atomic number 11?

Grade:12

2 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
9 months ago
Sodiumhas onevalence electron.Valence electrons
Vikas Amritiya
askIITians Faculty 158 Points
9 months ago

 

Valence electrons are found in the highest energy s and p orbitals in the main group of elements. The electron configuration for a neutral sodium is 
1s22s22p63s1
The highest energy 3s orbital contains one electron, therefore, neutral sodium atoms have one valence electron.

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