In each case tell which SN2 reaction will proceed faster. 1. The displacement by OH- on (a) CH3Br or (b) CH3I.
2. The displacement by CH3CO2- on 1-bromopropane in (a) dimethylformamide or (b) water.
For each pair of reactants below select the one that is more nucleophilic.
1.(a) BF3 or (b) F-.
2.(a) -OH or (b) -SH.

i can ! i just need to know what the paragraph is! : p

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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