which of the following behaves as (a) a nucleophile (b) an electrophile (c) both or (d) neither? Cl minus , NO plus , H2O , CH3Oh , CH4 , CH2O , CH3CN , CH3CH=CH2 , AlCl3 , BeCl2 , Cr plus3 , H2 and SnCl4... pls classify and let me know as soon as possible....

Cl minus - nucleophile   ,
 NO plus - electrophile  ,
H2O - nucleophile   ,
CH3OH - nucleophile due to lp   ,  
CH4 - neither   ,  
CH2O - can't say i don't thnk it can't be used as nucleophile or electrophile ,  
CH3CN - gives CN^- which is nucleophile   ,  
CH3CH=CH2 - nucleophile as double bond can  attack a gven compound   ,  
AlCl3 - electrophile - due lack of octet configuration,      
BeCl2 - can't say -    ,  
Cr plus3 - i guess used incase of oxidation thugh seems to be electrophile due to +ve character    , H2 - reduction with another reagent may be Nickel or someother  and   SnCl4 - can't say...