How many of the following is correct statement(s) regarding 1,2-butadiene (I) and 1,3-butadiene is/are a) I has perpendicular pi planes while II has parallel pi planes b) Both gives the same products on adding 1.0 equivalent of HBr at -80^(@) . c) I gives 2,2-dibromobutane while II gives 2,3-dibromobutane, when reacted exces of HBr at very low temperature d) Both have same length of C=C double bonds

How many of the following is correct statement(s) regarding 1,2-butadi

1.	How many of the following is correct statement(s) regarding 1,2-butadiene (I) and 1,3-butadiene is/are a) I has perpendicular pi planes while II has parallel pi planes b) Both gives the same products on adding 1.0 equivalent of HBr at -80^(@) . c) I gives 2,2-dibromobutane while II gives 2,3-dibromobutane, when reacted exces of HBr at very low temperature d) Both have same length of C=C double bonds
Answer» Solution :In cumulene , ADJACENT pi - bonds are present in PERPENDICULAR PLANE while in conjugated dienes , pi-bonds are present in parallel PLANES