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16 Cards in this Set
- Front
- Back
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Effective nuclear charge |
The net positive charge experience by an electron in many electron atom |
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Screening constant |
The portion of the nuclear charge that is screened from a valence electron by the other electrons in the Atom |
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Bonding atomic radius |
The radius of an Atom as defined by the distances separating it from other atoms to which it is chemically bonded |
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Ionization Energy |
The energy required to remove an electron from a gaseous atom |
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Electron affinity |
The energy change that occurs when an electron is added to a gaseous atom or ion. |
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Alkali metals |
Elements of group one on the periodic chart, they are very active, soft, metallic metals |
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Alkaline earth metals |
Elements of group 2 on the periodic chart |
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Allotropes |
Different forms of the same element in the same state |
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Halogen |
Exist as diatomic molecules, at room temperature F2 and CL two are gases, each gain one electron to form a negative 1 anion |
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Noble gases oxidation reduction |
All are monoatomic gases at room temperature, or very unreactive but can form a limited number of compounds |
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Oxidation-reduction reaction |
A RX in which electrons are transferred between reactants |
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Oxidation |
The loss of electrons from Atoms |
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Reduction |
The gain of electrons by Atoms |
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Oxidation number |
A positive or negative number assigned to an element in a molecule or ion that reflects the positive or negative character of that atom |
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Oxidizing agent |
The substance the oxidize another substance by excepting its electrons |
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Reducing agent |
The substance that reduces another substance by losing electrons |
