Term
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Definition
| 1/12 the mass of a standard Carbon-12 atom. |
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Term
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Definition
| + charged; mass of 1 amu. |
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Term
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Definition
| - charged; mass of 1/1836 amu. |
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Term
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Definition
| no charge; mass of 1 amu. |
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Term
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Definition
| Dense core of atom containing protons & neutrons. |
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Term
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Definition
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Term
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Definition
| Sum of protons and neutrons. |
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Term
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Definition
| Atoms of same element with different # of neutrons; different masses. |
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Term
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Definition
| Horizontal row; 7 periods. |
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Term
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Definition
| Veritcal columns; 18 columns. |
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Term
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Definition
| Elements in groups 1A-8A. |
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Term
| Transition Metal Elements |
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Definition
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Term
| Shell - Principle Energy Level |
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Definition
| Volume of space in an atom that are similar in energy. |
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Term
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Definition
| region within a shell that accommodates electrons of a particular energy value. |
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Term
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Definition
| Region within a subshell that can accommodate a max. of 2 electrons. |
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Term
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Definition
| Specific arrangement of electrons within an atom according to increasing energy; (shell, subshell, orbital). |
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