When k+ and i- combine, a(n) bond results. a) covalent b) ionic c) metallic d) polyatomic

B

Explanation:

It tends to lose or gain electron in order to get neutral and become stable. An ionic bond is formed due to transfer of electron from anion to cation. K⁺ is positively charged -it is a cation. ... when K⁺ and I⁻ bond, I⁻ loses its electron to K⁺ and ionic bond is created.

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

colorless gas, exhibiting a blue glow when placed in an electric field

b) solid

its a type of rock