What are valence electrons and why are they important to know about for bonding of atoms into molecules?

valence electrons are the electron in an outermost shell of an atom of an element (it is also called the outermost electron).

They are important for bonding because, when you bond two or more atom of an element, it is the outermost electron (valence electron) that will do the sharing of electrons when two atoms are bonded together.

the answer is d. 74.02

how important do you think an instrument is to the musician who plays it?