Which statement explains how the bands in the crystal of a metal are like atomic orbitals?
they both have localized electrons that orbit specific atoms.
they both involve ionization of some atoms so bonding can occur.
they both have delocalized electrons that move from atom to atom.
they both allow electrons to move from lower energy levels to higher energy levels.

D.They both

Explanation:

answer: the primary difference between a hypothesis and a theory is that b hypothesis is falsifiable, but a theory has been proven to be correct. theory is an explanation of something that is happening but hypothesis is a guess of something that can happen

explanation:

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.