Bio 112- chapter 3 lecture notes

Chemical property that describes the ability of an

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Unformatted text preview: t bond are pulled towards oxygen Net Effect: O has a parPal (δ) negaPve charge while H has a parPal (δ) posiPve charge polar-unequal charges What is electronega<vity? chemical property that describes the ability of an atom to attract electrons towards itself- can be calculated Let’s look at the first 4 rows of the periodical table: Atomic Number (number of protons) ElectronegaPvity Value Trends: F most electronegative- increases as go to the right and up. depends on availability of electrons to bond In contrast, molecular hydrogen (H2) and methane (CH4) are nonpolar molecules Covalent bond No difference in electronegaPvity between H and H * shared equally Hydrogen (H) has an electronegaPvity of ~2.1 Not much difference in electronegaPvity between C and H * shared relatively equally but electronegativity of all four hydrogens cancels out the pole/ movement of electrons in one area. <.5 Carbo...
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