The valence electrons of metals are weakly attracted to the parent nuclei, so the electrons break free and float. the moving electrons form that binds together, forming a metallic bond.

The valence electrons of metals are weakly attracted to the parent nuclei, so the electrons break free and float. The moving electrons form a electron negative blanket that binds the atomic positive nuclei together, forming a metallic bond.

So the answers are { Negative } and { Positive }.  

Please vote Brainliest (:

a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.

a and c

c is 100% but i am confused in a