This is an alloy, not ionic or covalent.
PbSn is a metal alloy solder. An alloy is a solid mixture, not a chemical compound. There are many combinations. https://en.wikipedia.org/wiki/Solder#Solder_alloys
The two main types of chemical bonds are ionic and covalent.
Covalent
This is a covalent compound.
ionic
Ionic
This is an ionic compound.
ionic
Ionic
It is ionic
A nonbinary ionic compound. Covalent bonds are molecular - nonmetal.
Is Ag3N covalent or ionic
It is Ionic
Is CsL ionic or covalent
Covalent
Sulfur tetrachloride is a covalent compound.
Diboron trisulfide is a covalent compound.
It is polar covalent, not ionic