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Description
Flashcards by Chuleeporn Thanomsilp, updated more than 1 year ago
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Created by Chuleeporn Thanomsilp
over 11 years ago
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| Question | Answer |
| Electron configuration | how electrons are arranged into the atomic orbitals in an atom. |
| Pauli Exclusion Principle | There cannot be two electrons in the same atom with the same set of four quantum numbers. Hence, AN ATOMIC ORBITAL CAN HOLD A MAXIMUM OF TWO ELECTRONS AND THEY MUST HAVE OPPOSITE SPINS. |
| Hund’s rule | An electron will be arranged separately into an empty orbital with the same energy before pairing. |
| paramagnetic substance | substance that is weakly attracted by a magnetic field; it usually has unpaired electrons in atoms. |
| diamagnetic substance | substance that is not attracted by a magnetic field generally because it has only paired electrons. |
| Show electron configuration for Phosphorus (P) atom. |
Image:
spdf_notation_P (image/jpg)
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| Show condensed electron configuration of bromine (Br) atom. |
Image:
condensed_EC_Br (image/jpg)
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| Show orbital diagram of valence electron of sulphur (S) atom. | |
| period 3 group 3A | |
| Gallium (Ga) | |
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Image:
atomic_size (image/jpg)
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| Define: First ionization energy | The amount of energy that must be added to remove an electron from a neutral atom in gaseous state to give a cation. |
| Define: Electron affinity | The amount of energy released when an electron adds to a neutral atom to give an anion. |
| Elements in group 7A are called_________. | Halogen |
| Alkali metals are in which group in periodic table? | Group 1A |
| Compare first ionization energy of metals and non metals. | Metals has low first ionization energy than non metals. |
| What is Zeff ? | Effective nuclear charge (Zeff) is the net nuclear charge actually experienced by an electron. |
| Give examples of alkaline earth metals. | Group 2A elements : Be Mg Ca Sr Ba Ra |
| Show orbital diagram of chromium (Cr) atom. | |
| Show electron configuration of copper (Cu) atom. |
Image:
EC_Cu (image/jpg)
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