Rank the following in order of increasing (lowest to highest) reactivity: a) Na, Rb, Li

b) S, P

c) Xe, Rn

d) W, Hg, Cs

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Using the periodic table, complete the table to describe each atom. type in your answers. a ? b? c? d? e? f?

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.