Na+ has completely filled K and L shells. Explain.

Answer: Along with lithium and potassium, sodium belongs to the alkali metal family. Its most famous claim to fame is that it is one of the two ingredients that make up table salt.

The number of atoms in sodium (Na) is 11.

The number of electrons in sodium (Na) equals eleven.

1s²2s²2p⁶4s¹ is the electronic configuration of sodium [Na].

The Na⁺ ion possesses one less electron than the Na atom, resulting in a total of ten electrons. As a result, 2 electrons are sent to the K-shell and 8 electrons are sent to the L-shell, entirely filling the K and L shells.