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. one and only(a) boxy foot of atomic number 78 weighs 21 times as much as a cubic foot of water. A grayish-white metal, Platinum has a run promontory of 1772 degrees C and a realatively high boiling manoeuvre of 3827 degrees C. It has a high fusing point, is pliable and malleable, expands slightly upon heating, and has high galvanising resistance. Platinum is seldom utilise in its pure demonstrate because it is likewise soft.
The third near ductile metal, it can be emaciated into a run one twenty thousandth mapping of an inch in thickness. It is extremely resistant to flesh out by air, water, single acids and ordinary bicycle reagents, but does dissolve in sulphurous aqua regia, a mixture of nitric and hydrochloric acids. Platinum has the funny property of existence able to absorb bounteous amounts of atomic number 1 at ordinary temperatures and resi...If you indigence to get a full essay, order it on our website:
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