chemistry 0.0 / 5 ? Chemistrythings i didnt understandA2/A-levelOCR Created by: pxnxCreated on: 16-01-20 16:10 what is a covalent bond? non metal + non metal , attraction between a nucleus and a shared paiir of electrons 1 of 14 what is an ionic bond? metal + non metal, electrostatic attraction between oppositely charged ions 2 of 14 what do metals and non metals do to form an ionic bond? metal- always loose e-,forms cations, non metal- always gains, forms anions 3 of 14 what are lone pairs? repel more than bonding pairs, by 2.5 degrees 4 of 14 what are bonding pairs? equally repel eachother 5 of 14 describe a linear bond angle 180 degrees, 2 bonding pairs 6 of 14 describe a trigenal planar bond angle 3 bonding pairs,120 degrees 7 of 14 describe a tetrahedral bond angle 4 bonding pairs, 109.5 degrees 8 of 14 describe a pyramidal bond angle 3 bonding pairs, 1 lone pair, 107 degrees 9 of 14 describe a non linear bond angle 104.5 degrees, 2 bonding pairs, 2 lone pairs 10 of 14 describe a trigenal planar bipyramid bond angle 90 and 120 degrees , 5 bonding pairs 11 of 14 when does a pd-pd bond occur when there is a large difference between two atoms togeher that are seperately in a covalent bond 12 of 14 when does hydrogen bonding occur? hydrogen bonded to (F/O/N) , partial negatively charged element bonded to a partialy positively charged element 13 of 14 when does an instantaneous dipole - induced dipole occur? electron density is contantly moving, un even at a instant, induces dipole on neighbouring molecule 14 of 14
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