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chemistry- chapter 4
Chemistry
| Question | Answer |
|---|---|
| Groups | Coulumns |
| Periods | Rows |
| Halogens | non metals |
| metals are to the | left |
| simmilarities in eleemens in each group? | 1. same group 2.same number of valence electrons 3.Same properites |
| what makes noble gases so un reactive? | Full octet |
| octet rule | atoms of elements want to gain or lose elevtons to have 8 in their outermost e level |
| ions | an atom that has a positive or negative charge |
| ations | negative ions |
| cations | positive ions |
| metals | lose cations |
| nonmetals | gain anions |
| what takes th emost space in an atom? | electrons |
| as they go down on the periodic table the atomic radius goes | up |
| as they go over on the pt the atomic radius goes | down |
| anions have a _____radius | larger |
| cations have a _____ smaller | smaller |
| ionazion energy | electrons required to remove one electron from an atom of an element |
| electronegativity | measure of ability of atom to gain electrons |
| factors that influence trends | size, nuclear charge, elcctron shielding |
| main group element | an element in the sblock or p block |
| alloy | a solid of liquid mixture of two or more metals |
| nuclear reaction | reaction that affects the nucleus of an atom |
| mendelev organize the periodic table bu increasing | atomic mass |
| mosley- organized the periodic table by increasing | by atomic numbers |
| electron affinity | the energy charge that occurs when a neutral atom gains an electron |
| as the nuclear charge increases across the period the effective nuclear charge ____________ pulling the electrons closer to the nucleus and _______________the size of that atom | increasing and decreasing |
Created by:
babiegrll08
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