The solid wedge represents the bond coming out of the paper, dashed line going down the
paper and a straight line representing bond in the plane of the paper Rationalised 2023-24
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Chemistry
single step and no intermediate is formed As the reaction progresses
and the bond between the incoming nucleophile and the carbon
atom starts forming, the bond between carbon atom and leaving
group weakens As this happens, the three carbon-hydrogen bonds
of the substrate start moving away from the attacking nucleophile