Metals conduct heat and electricity exceptionally well due to their unique atomic structure and the presence of free electrons. In metals, electrons are delocalized and can move freely throughout the lattice, providing efficient pathways for electrical current and thermal energy transfer. Their densely packed atomic arrangement and the ability of electrons to move with low resistance make metals excellent electrical conductors. In addition, metals can efficiently transfer heat through a combination of electron mobility and lattice vibrations, resulting in high thermal conductivity. These properties make metals valuable in a wide range of applications where efficient heat and electricity conduction is essential, from electrical wiring to cooking utensils and industrial applications.So in summary, metals conduct heat and electricity well , because how free the elecrtons are and compact the solid is ,which helps the electron to move easier.