Question

who was first to prepare hydrogen? who prepared oxygen for first time? ​

Answer 1

Hydrogen is a chemical element with symbol H and atomic number 1. With a standard atomic ... The universal emergence of atomic hydrogen first occurred during the recombination epoch. .... The ortho/para ratio in condensed H2 is an important consideration in the preparation and storage of liquid hydrogen: the conversion ..

Answer 2

Answer:

Explanation: hydrogen was not prepared by anyone