Which substance contains free-floating valence electrons?
O
Cu
KBr
NaCl

Which type of bonding involves the complete transfer of a valence electron from a less electrogrative atom to a more electronegative one

Choose all the answers that apply. ionic compounds dissolve easily in water do not dissolve in water have low melting points have high melting points conduct electricity when melted

Compare and contrast the bohr model and the electron cloud models of the atom.