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pt.2 atomic
models of atoms
| Question | Answer |
|---|---|
| neils bohr 1913 | said electrons move in a path around the nucleus (like planets orbiting the sun) |
| electrons | has a specific energy depending on its path |
| electrons can only be in | certain energy levels. |
| what must gain or lose energy to go to the next level | electrons |
| bohrs model | still accurate and the actual path is random |
| electrons with different energies | exist on different levels |
| number of levels in a atom | depends on the number of electrons |
| electrons moves in | orbitals within their energy level |
| electrons path is | dictated by their orbitals |
| what is an orbital | region in the atom outside the nucleus where the electron is most likely found |
| their are 4 kinds of orbitals | s, d, p, f |
| s- | spherical shaped orbital(sharp) |
| p- | dumbbell shaped orbital(principal) |
| d- | very complexed orbital(diffuse) |
| f- | very complex orbital (fundamental) |
| every atom has a | Valence electron found in the outside of the neutron |
| Electrons are most likely found in | the outside of the neutrons |
| periodic table | groups similar elements together |
| properties of an element can be | predicted based on its location |
| 1st arrangement of elements was by | mendeleev |
| mendeleev element order was by | their atomic mass |
| the table was refined by | moseley |
| mosely elements order was by | number of protons in the nucleus (only a few changed) |
| which elements mosely changed | Ar, K, Co, Ni, Te, I |
| Elements in the same group | have the same number of valence electrons |
Created by:
btiffany
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