In how many of the following the concept of resonance can be observed CH_(2)=CH-Cl, CH_(3)-O-overset(+)(C)H-CH_(3) CH_(3)-O-CH_(2)overset(+)(C)H, CH_(3)-NH-CH_(2)-CH-CH_(3) CH_(3)-CH=CH-NH_(2), CH_(3)-CH_(2)=CH_NH-CH_(3)

In how many of the following the concept of resonance can be observed

1.	In how many of the following the concept of resonance can be observed CH_(2)=CH-Cl, CH_(3)-O-overset(+)(C)H-CH_(3) CH_(3)-O-CH_(2)overset(+)(C)H, CH_(3)-NH-CH_(2)-CH-CH_(3) CH_(3)-CH=CH-NH_(2), CH_(3)-CH_(2)=CH_NH-CH_(3)
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