Negative because it'll have to gain an electron
Explanation:
A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms
There should be 22 figures .
A residue from a gunshot is most likely gun powder, which tells you what kind of bullet was shot and the type of gun that was used to shoot the target/victim/person. Some complications may be that there is more than one gun or weapon which uses that residue, so it may be hard to pinpoint it and the bullet can't really tell you who it is unless there's DNA on the bullet, and the chemicals of the bullet may even destroy evidence.
