Metallic bonds are bonds between 2 metals. Their electrons flow around freely unlike covalent or ionic bonds.
Hydrogen only has one electron in its lowest energy level. This is a very unstable arrangement, and hydrogen gas undergoes a variety of reactions so as to reach a stable electron configuration where its energy level is either empty of electrons, or filled with electrons.
I wanna say it would be 1 would be A 2 would be C 3 would be D 4 would be B and 5 would be E
hope this helps
Answer:
I think the first option is the answer
Physical. chemical only applies when it undergoes a reaction
