Cobalt
Nickel
Hydrogen
Phosphorus
Answer is Wrong!
Answer is Right!
The correct answer is: A. Cobalt
Cobalt was the first element that was chemically discovered by the Hanning brand. It was discovered in 1735 by Georg Brandt, a Swedish chemist. Brandt was studying the mineral smaltite, which is a cobalt ore. He found that the mineral contained a new element that he named cobalt.
Cobalt is a hard, silvery-white metal that
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