| Front | True or FalseHalf filled and fully filled d(and f) orbitals tend to have lower energies than other ones and thus are more stable, hence favored |
| Back | TrueNotable examples,Chromium(and other elements in its group)Should have a configuration of [Ar]4s2, 3d4However moving one electron from 4s to 3d allows the 3d to be half filled, which is more stableThus in reality chromium is:[Ar]4s1, 3d5Copper(and other elements in its group)Should have [Ar]4s2,3d9However moving one electron from 4s to 3d allows the 3d to be fully filled, which is more stableThus in reality copper is:[Ar]4s1, 3d10This exception is seen only in d and f orbitals, not seen in p orbitals |
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| Front | Can two electrons of the same atom posses the same quantum numbers |
| Back | NoAccording to the Pauli exclusion principle no two electrons in the same atom can posses the same four quantum numbers |
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| Front | What formula relates energy and frequency |
| Back | E = hfThis is the energy for 1 photonIf given, 600 photon for example, and you know frequency of them, the energy for that sample is E = 600 * hfSince E = hf is for 1 photon, to get the energy for 600, simply multiply the number by 600H = Planck's constant has the value 6.626e-34F = frequency of the radiationE= energy |
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