Question

Na+ sodium has completely filled K-shell and L-shell ​

Answer 1

Answer:

An atom of Na has a total of 11 electrons. Its electronic configuration is 2, 8, 1. But, Na+ ion has one electron less than Na atom i.e. it has 10 electrons. Therefore, 2 electrons go to K-shell and 8 electrons go to L-electrons, thereby completely filling K and L shells.

Explanation:

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Answer 2

Explanation:

Sodium atom (Na), has atomic number = 11

Number of protons = 11

Number of electrons = 11

Electronic configuration of Na = K L M

2 8 1

Sodium atom (Na) looses 1 electron to become stable and form Na+ ion. Hen it has completely filled K and L shells.