Take-home points on atoms and molecules:
[1986 Nobel Prize: Binnig and Rohrer]
Ag (silver) surface with |
absorbed Fe (iron) atom
and CO (carbon-monoxide).
(A) CO desorbs from surface
and binds to tip
(B) tip with CO moves
toward Fe on surface
(C) tip detaches CO that
moves to surface;
(D) single Fe-CO bond forms.
|(A) Five Fe atoms and four CO molecules on Ag surface.
(B) formation of Fe-CO shown in whole figure above.
(C) Another Fe-CO formed.
(D) Second CO moved to Fe-CO to form Fe(CO)2.
|Oxygen molecule: what is it?|
|Chemist view of hydrogen and oxygen forming wather.|
|Propane combusting with oxygen to form carbon dioxide, water, heat and light|
Note:Balanced reaction conserves the number of each atom species.