Ions.

Neon, a symbol with $\ce { Ne }$ , is an 18th group element, called noble gas, so it cannot be an ion. (Exactly, it can be an ion, but we cannot find it.)

Silicon, a symbol with $\ce { Si }$ , is 14th group, so it is $\pm 4$ electrons changes.

Boron, a symbol with $\ce { B }$ , is 3th group, so it is $3+$ electrons changes.

Potassium, a symbol with $\ce { K }$ , is 1th group, so it is $1+$ electron changes.

Beryllium, a symbol with $\ce { Be }$ , is 2th group, so it is $2+$ electrons changes.

Sulfur, a symbol with $\ce { S }$ , is 16th group, so it is $2-$ electrons changes.

Magnesium, a symbol with $\ce { Mg }$ , is 2th group, so it is $2+$ electrons changes.

Fluorine, a symbol with $\ce { F }$ , is 17th group, so it is $1-$ electron changes.

The end.