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arsenic is a natural element and its in group 15 period 4 of the periodic is a transitional metal and its symbol on the periodic scale is (As) and the atomic number is 33 and its relative atomic mass is 74.92 and was first albertus magnus and is notoriously poisonous and its electrons shell is 2,8,18,5 and the density is 5.727 g-cm cubed and the triple point is at 1090 k (817 C) and its mohs scale is 3.5 rating

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14y ago

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