In chemistry, the periodic table is a table showing the chemical elements arranged according to their atomic numbers.
N-SING : the N
In chemistry, the periodic table is a table showing the chemical elements arranged according to their atomic numbers.
N-SING : the N
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006