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<p>chemist <a href="page.php?w=Alexander_Butlerov">Alexander Butlerov</a>. </p>

<p>Double bonds involving carbon are stronger and shorter than <a href="page.php?w=covalent_bond">single bond</a>s. The <a href="page.php?w=bond_order">bond order</a> is two. Double bonds are also electron-rich, which makes them potentially more reactive in the presence of a strong electron acceptor (as in <a href="page.php?w=Halogen_addition_reaction">addition reactions of the halogens</a>).</p>

<p><big>Double bonds in alkenes</big></p>
<p>The type of bonding can be explained</p><p>
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