Chemistry Chap 5.2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| the ways in which electrons are arranged into various orbitals around the nucleus | electron configurations
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| aufbau principle | electrons occupy the orbitals of lowest energy first
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| Pauli exclusion principle | an atomic orbital can describe at most two electrons
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| Hund's rule | one electron enters each orbital of a sublevel until all orbitals contain an electron with the same spin direction
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| Sublevels of a lower principal energy level may _____ the sublevels of a higher principal energy level | overlap
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| Some actual electron configurations differ from the aufbau principal because half-filled and filled sublevels are more _____ than other configurations | stable
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| Exceptions to the aufbau principle are due to subtle _________ interactions in orbitals with very similar energy levels. | electron-electron
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| Two elements whose electron configurations do NOT follow the aufbau principle are ___ and ___. | Copper and chromium
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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