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| A __________ is an element that tends to gain valence electron in chemical reactions, becoming an _____ in the process. |
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| A _____ is an element that tends to lose its valence electrons in chemical reaction, becoming a _____ in the process. |
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| For elements in groups labeled A in the periodic table (IA, IIA, etc.), the number of _______ _______ corresponds to the _____ number. |
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| Period number of an element is equal to the number of total ______ that contain electrons in the atom. |
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| Each shell can hold a maximum of ___ electrons. |
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| The ______ the shell, the more electrons it can hold. |
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| 3.00 X 108 m/s (speed of light) |
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| 6.626 X 10-34 J • s (Planck’s constant) |
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| Wavelength of electromagnetic radiation |
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| energy of electromagnetic radiation |
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| The size of an atom tends to _________ across a period. |
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| The size of an atom tends to _________ down a group. |
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| The ionization energy of an atom generally _________ as you move from left to right across a period. |
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| As the size of an atom increases, the ionization energy __________. |
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| As the size of an atom decreases, the ionization energy __________. |
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