CHEM 103 - Module 5 Exams 100% Correct!

ionic bonds - ANSWERtwo oppositely charged ions (2Na + Cl₂ = 2Na⁺+2Cl⁻) metals tend to ______ electrons - ANSWERlose nonmetals tend to ______ electrons - ANSWERgain covalent bonds - ANSWERshare at least one pair of electrons so both atoms have 8 valence electrons 2 types of covalent bonds - ANSWERpolar, nonpolar polar covalent bond - ANSWERunequal sharing of electrons, difference in electronegativity 0.5-1.6 nonpolar covalent bond - ANSWERelectrons are shared equally, electronegativity difference less than 0.5 ionic bond - ANSWERelectronegativity difference greater than 1.6 number of valence electrons = - ANSWERelement's group number lewis structures of molecules steps - ANSWER1. find total # of valence electrons 2. place least negative atom in the center (H always on outside) 3. place pair of electrons between each element 4. position the rest of electrons in lewis structures of polyatomic ions, the ______ is included - ANSWERcharge tetrahedral electron geometry - ANSWERsurrounded by 4 groups of electrons triangular planar electron geometry - ANSWERsurrounded by 3 groups of electrons linear molecular electron geometry - ANSWERsurrounded by 2 groups of electrons