How does a structure of sodium ion differ from the structure of sodium atom?

Question

How does a structure of sodium ion differ from the structure of sodium atom?

Answer 1

A sodium ion has one less valence (outer) electron in its valence shell compared to a sodium atom. That is basically it. Because sodium ion, Na+.

Answer 2

From the periodic table we know that sodium has 11 (atomic number 11) protons and then also 11 electrons.  A "normal" sodium atom has an atomic mass (weight of the proton + weight of neutron) of 22 because there are also 11 neutrons also. With a sodium ion, there is one less electron.  Na+  means that the sodium atom has lost 1 negative charged electron , hence the positive charge.

Answer 3

The Na atom has 11 protons and 11 electrons.

The Na+ ion has 11 protons and 10 electrons.

The sodium ion has a 1+ electrical charge whereas the atom is neutral.

Electron configurations are:

11Na 1s2 2s2 2p6 3s1

11Na+ 1s2 2s2 2p6