nuclear number 78 atomic number 78 is a relatively rare, chemically inert, gold element. It symbol is Pt, atomic number is 78, and its atomic weight is 195.09. Platinum is one of the heaviest substances known. integrity boxy foot of Platinum weighs 21 times as much as a cubic foot of water. A grayish-white metal, Platinum has a melting promontory of 1772 degrees C and a realatively high boiling point of 3827 degrees C. It has a high fusing point, is plastic and malleable, expands slightly upon heating, and has high electrical resistance. Platinum is seldom utilize in its pure stage because it is likewise soft.
The third virtually ductile metal, it can be emaciated into a take up one twenty thousandth mapping of an inch in thickness. It is extremely resistant to attack by air, water, single acids and common reagents, but does dissolve in sulphurous aqua regia, a mixture of nitric and hydrochloric acids. Platinum has the funny property of cosmos able to absorb large amounts of atomic number 1 at ordinary temperatures and resi...If you want to get a full essay, order it on our website:
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