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15 Cards in this Set
- Front
- Back
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Atomic number |
Number of protons |
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Mass number |
Number of protons+Number of neutrons |
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Isotopes |
Atoms with the same number of protons but a different number of neutrons |
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4 key stages of mass spectrometry |
Electrospray ionisation, acceleration, deflection, detection |
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Ionisation energy (I.E) |
The energy it takes to remove electrons |
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SIG.FIG rule |
Always round answers to the highest amount of significant figures found in the initial measurements |
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Atomic mass precision rule |
Always round a calculated atomic mass to one decimal point (as found in the periodic table) |
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Fragmentation |
When an unstable ion breaks up into two smaller pieces |
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Relative atomic mass |
The weighted average of an element's isotopic masses compared to 1/12 of a carbon 12 mass. |
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Shielding effect |
The blocking of the nuclear charge to the outer shell by inner shells |
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P-orbital |
A circular orbital, found once in the first shell onwards. |
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S-orbital |
A dumbbell-shaped orbital found three times in the second shell onwards. |
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D-orbital |
A many shaped orbital found 5 times in the 3rd shell onwards. |
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Orbital |
A volume of space in which there is a high probability of finding an electron. |
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Shell |
A collection of orbitals with similar energy and whose radial distribution from the nucleus is approximately equal |
