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Unformatted text preview: The space occupied would be vastly less (most of an atom is empty space). However the mass of this would be a very substantial portion of the total mass of the chair because most of the mass of an atom is in its nuclei. 2 marks 3. In atoms, what changes during a chemical reaction? The electron configuration of an atom. 2 marks 4. How many electrons occupy the valence shell of an atom of each of the following elements: a) Bromine 7 b) Germanium 4 c) barium 2 3 marks Total 9 marks Submission Instructions Submit your assignment using the drop box on the Assignment page for this unit....
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This note was uploaded on 06/14/2011 for the course CHEM 1 taught by Professor Bielecka during the Spring '11 term at Georgian.
- Spring '11