With 11 electrons how many electron shells does sodium have?

Explanation:

So... for the element of SODIUM, you already know that the atomic number tells you the number of electrons. That means there are 11 electrons in a sodium atom. Looking at the picture, you can see there are two electrons in shell one, eight in shell two, and only one in shell three.

ANSWER

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

1s

2

2s

2

2p

6

3s

1

The highest energy 3s orbital contains one electron, therefore, neutral sodium atoms have one valence electron