Dear Student, Gold and platinum exist in native state here native state means that they are found in their original form not chemically combined with nature unlike other metals or combined state metals which consists of at least two dissimilar elements combined in a definite ratio. Amongst the alloys found in native state have been brass, bronze, pewter, German silver, osmiridium, electrum, white gold, and silver-mercury and gold-mercury amalgam. Only gold, silver, copper and the platinum metals occur in nature in large amounts. Regards