For example, atoms of hydrogen, nitrogen, oxygen, and chlorine are not capable of independent existence whereas atoms of helium, neon, and argon are capable of existing independently.Ītoms of most elements are not able to exist independently and they form molecules or ions. This phenomenon cannot be explained by Dalton’s atomic theory.Ītoms can be defined as the smallest particles of an element which may or may not have independent existence but take part in a chemical reaction. Both of these allotopes contain only carbon atoms but they show different structure and properties. Dalton’s atomic theory does not differentiate the properties of carbon allotropes such as diamond and graphite.It states that atoms of two or more elements combine in a ratio of a small whole number to form compounds but atoms of certain complex organic compounds such as sugar/sucrose (C 11H 22O 11) do not combine in a ratio of a small whole number. For example, 40Ar and 40Ca are two different atoms but their mass number are similar.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |