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Why is benzene more stable than the theoretical model cyclohexa-1,3,5-triene?

In cyclohexa-1,3,5-triene the molecule has 3 single bonds and 3 double bonds where all the electrons are localised. As a result the energy needed to hydrogenate cyclohexa-1,3,5-triene is (3x -120kJ/mol) = -3...
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Answered by Afia P. • Chemistry tutor
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What are the 3 main types of chemical bonding? Give definitions of them.

IonicCovalentMetallic Ionic bonding The electrostatic attraction between positive and negative ions Covalent bonding Electrostatic attraction between a shared pair of electrons and the nuclei Metallic bondin...
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i)Give the Correct full electronic configuration for the Mg2+ ion, ii) and state why it is easier to form the 2+ state for Mg than Ben

Mg electronic configuration - [Ne] 3s2, 2+ charge - 2 Electrons removed, Mg2+ configuration - [Ne] - 1s2 2s2 2p6 Be is directly above Mg in the periodic table, meaning Be has its valence electrons in the 3s ...
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Why are some complex ions coloured?

Ligands causes d orbitals to split. Electrons get excited to higher energy levels from ground state. Visible light is absorbed to promote electron to a higher energy level and the light that is not absorbed ...
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Answered by Juliet O. • Chemistry tutor
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Why is Phenol more reactive than Benzene in electrophilic substitution reactions?

Phenol has the -OH group and the oxygen has a lone pair of electrons which are donated into the Benzene ring and activate the ring which make it more susceptible to attack by electrophiles. This means Phenol...
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Answered by Juliet O. • Chemistry tutor
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