Why are all of the transuranium elements radioactive? (Hint: See Section 1.) 2
WHAT ARE BONDS ✦ Bonds are the "glue" that hold atoms together. Covalent bond: A bond resulting from two atoms sharing a pair of electrons • When electrons are shared to form a bond, there is a decrease in energy, indicated by the negative value of ΔH. • Moving toward the left of the diagram, the hydrogen atom approaches each other, ad there are several forces that must be taken into account: 1: The force of repulsion between the two negatively charged electrons 2: The force of repulsion between the two positively charged nuclei 3: The forces of attraction between the positively charged nuclei and the