The lattice points in a metallic crystal are made of

The lattice points in a metallic crystal is made of metal cations enveloped in mobile valence electrons. The free electrons are capable of mobility through the entire crystal, among positive and negative metal atoms. This capability makes the metal a conductor of electricity.

one characteristic that is shared by all is a soft body. many

of these invertebrate animals also have an outer shell to protect their

body. oysters, clams, snails, and mussels are all mollusks. so are octopuses, squids, and slugs. mollusks live on land and in freshwater.