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| Arrangement of Electrons in an atom |
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In a vacuum is 3.00x10^8m/s
in air is close to 3.0x10^8m/s |
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| Distance between successive peaks (expressed in M) |
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| Number of waves that pass a given point in 1 second |
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Definition
| They emit radiation. the wavelenght depends on temperature |
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| smallest quantity of energy emitted or absorbed as electromagnetic radiation |
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Definition
h=plancks constant
v=frequency |
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Definition
| a spectrum containing radiation of only specific wavelengths |
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| Bohr's model of a hydrogen Atom |
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Definition
| electron could circle the nucleus of an atom only in orbits of certain specific nuclei. As n increases, the radius of orbit increases. as n increases E increase. n1=Ground state. N2= Excited state |
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| If electrons absorbs energy (from a photon)... |
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Definition
| it can movw to ahigher energy state |
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| When an electron movess to a lower energy state |
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Definition
| emits the excess energy as a photon |
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Term
| Bohr's theory only works for what? |
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Definition
| ions with a single electron/ |
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| Louis De Broglie (nobel Prize 1929) |
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Definition
| postulated that matter shows properties of waves |
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| at a subatomic level, it is inheretly impossible to know simultaneously both the exact momentum of a electron and its position in space. means only can give probability |
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