Among `NH_(3)`,`H_(2)O`,`OH^(-)`,`H^(+)`,`CO_(2)` ,`C_(2)H_(4)` and `BF_(3)` ,the total number of lewis bases are

Among H_(3)BO_(3), AlCl_(3), BF_(3), B_(2)H_(6) , Li[BH_(4)], AlF_(6)^(3-), [BH_(4)]^(-) , the number of Lewis acids are :

NH_(3) and H_(2)O form NH_(4)OH by

Among the complex ions, [Co(NH_(2)-CH_(2)-CH_(2)-NH_(2))_(2)Cl_(2)]^(+),[CrCl_(2)(C_(2)O_(4))_(2)]^(3-),[Fe(H_(2)O)_(4)(OH)_(2)]^(+),[Fe(NH_(3))_(2)(CN)_(4)]^(-),[Co(NH_(2)-CH_(2)-CH_(2)-NH_(2))_(2)(NH_(3))Cl]^(2+) and [Co(NH_(3))_(4)(H_(2)O)Cl]^(2+)] , the number of complex ion (s) that show(s) cis-trans isomerism is

Among the coimpounds, BF_(3), NH_(3), H_(2)O,SF_(4)and BeCl_(2) , identify the ones in which the central atom has the same type of hybridization.

C_(6)H_(12)O_(2)(X) overset(H_(3)O^(+))toC_(2)H_(5)CO_(2)H+C_(3)H_(7)OH , X is

Arrange NH_(4)^(+), H_(2)O, H_(3)O^(+), HF and OH^(-) in increasing order of acidic nature: