What is number of valence electrons for sodium?

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Answer 1 · 2016-07-02T14:32:10

1 valence electron

Electronic configuration of sodium will be 2,8,1. Here 1st and 2nd shells are complete but 3rd shell is not. So 1 valence electron.

Answer 2 · 2016-07-02T14:32:50

There is one valence electron in a Sodium atom.

The element Sodium is in the 3rd energy level first column of the periodic table. This means the electron configuration for Sodium is

#Na = 1s^2 2s^2 2p^6 3s^1#

The valence electrons are found in the highest energy level in the #s# and #p# orbitals of the atom.

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For Sodium this is #3s^1# making one valence electron.