2b Transition Metals

2b Transition Metals
Name	Symbol	Atomic number	Atomic weight	Boiling point	Melting Point	Density
Zinc	Zn	30	65.38	907 C	420 C	7.13 g/cm3
Cadmium	Cd	48	112.2	767 C	321 C	8.65 g/cm3
Mercury	Hg	80	200.6	357 C	-39 C	13.55 g/cm3

notes: The element Zinc is used to coat steel objects to prevent rust(the Zinc corrodes first), and in Zinc-Carbon batteries.
Cadmium is used in many photo-resistive cells, and can be extremely poisonous.
Mercury is the only metal that is liquid at room temperature, and readily forms highly poisonous compounds with organic substances. It is often used in barometers, and in some thermometers.

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