Which statements are true of a white dwarf?

B

Explanation:

- it is the result of the core collapse of a low-mass star that sheds its outer layers.

-it cools down to become a black dwarf.

Explanation:

because it's right, alright.

brainliest pls

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.