What is formed when two atoms of bromine bond together?
(1) a monatomic molecule
(2) a diatomic molecule
(3) a heterogeneous mixture
(4) a homogeneous mixture
gold can be flattened into an extremely thin sheet. the malleability of gold is due to the
(1) radioactive decay mode of the isotope au-198
(2) proton-to-neutron ratio in an atom of gold
(3) nature of the bonds between gold atoms
(4) reactivity of gold atoms