add up the mass of protons and neutrons
<span>FeNCS+ product...............thats how you do it i believe </span>
Answer:
the Rhyniognatha hirsti
Explanation:
at age 400 million years old
Try C I’m sorry if you get it wrong but I’m like 90% sure
A molecule may be nonpolar either when there is an equal sharing of electrons between the two atoms of a diatomic molecule or because of the symmetrical <span>arrangement of polar bonds in a more complex molecule.</span>
