Maria works for NASA. She designs robots that will be sent into space. Which field of science does Maria's job most closely involve?

b..

is the correct one

explanation:

covalent bonds form as valence electrons are shared between two atoms. lewis structures and structural formulas are common ways of showing the covalent bonding in organic molecules. formal charge describes the changes in the number of valence electrons as an atom becomes bonded into a molecule.

i think its 5049.

i hope this !

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;