Chemistry Final
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11 terms
Terms | Definitions |
|---|---|
 What are Ionic Bonds? What type of atoms bond ionically? | Bonds in which atoms gain or lose e⁻. Between metals and nonmetals. |
| What are covalent bonds? What type of atoms bond covalently? | Bonds in which atoms share e⁻. Between nonmetals. |
| Main difference between writing lewis structures for ionic compounds vs. molecular compounds? | Ionic: nonmetals and metals. Transfer e⁻. Have positive or negative charges. Covalent: nonmetals, share e⁻. Have no charges. |
| What is electron configuration? | arrangement of electron in atomic orbitals |
| What is atomic radius? | The distance from the nucleus. |
| What is the trend in atomic size and why does this occur? | From left to right, atomic radius decreases as increasing number of electrons pull the shell closer to the nucleus. Going down columns, radius increases due to the addition of another she.. |
| What is ionization energy? | energy required to remove an electron from an atom |
| What trends occur for ionization energy and why does this occur? | Left to right: Increases b/c there are more protons in the nucleus. Up & down: decreases b/c of the distance between the nucleus and the valence electrons |
| What is electronegativity? | Attraction for electrons |
| What trend occurs for electronegativity and why does this occur? | Left to right: Increases because the number of charges on nucleus increases. Up and down: decreases because bonding pair of electrons ins increasing distant from the attraction of the nucleus. |
| What are the three main parts of an atom? Which has the least mass? | Electron: e⁻ mass, Proton: P+ Neutron: N |
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