CHMA10H3 Study Guide - Final Guide: Lewis Structure, Exothermic Process, Vsepr Theory
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CHMA10H3 Full Course Notes
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Document Summary
Nerve signals is the movement of ions across the cell membrane. Sodium/potassium pumps push na out and brings k in. Mendeleev"s periodic law: predict what the properties of an element will be based on its position on the table. Quantum mechanics is a theory that explains why the periodic trends exist. Electron configurations: h = 1s1, he = 1s2, etc Period number: row number (energy level of valence electrons) Group number: column number (number of valence electrons) Length of each block : maximum number of electrons the sublevel can hold. Multi-electron systems: electrons are attracted to the nucleus simultaneously and thus repel each other. Outer electrons are shielded from the nucleus by core electrons. Shielding causes outer electrons to feel the full strength of the nuclear charge. The net positive charge that attracts a particular electron. Electrons in the same energy level contribute to screening but is negligible since it is so miniscule.
