Yodo (1), whose atomic number is 53, has very important applications. At medicine, it is used as tincture of iodine, an antiseptic. Knowing that the iodine is a nonmetal, its group and period in the periodic table are, respectively: the A)actinides, 5o period. B)chalcogen, 5o period. C)chalcogen, 3o period. D)halogens, 7o period. E)halogens, 5operiod.​

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation:

answer; natural resources;

c, liquids evaporate, creating a gas