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Why are metals good conductors of electricity?

Because metals contain a ‘sea’ of delocalised electrons that are free to move around the metallic lattice, carrying charge.
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Answered by Aoife M. • Chemistry tutor
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what is electronegativity and explain the trend in electronegativity as we go down the group?

Electronegativity is the power of an atom to attract electrons in a covalent bond towards itself. As we go down the group, electronegativity decreases because the atomic radii increases. The atomic radii inc...
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What is the optical activity of the product formed when propanone is refluxed with HCN with KCN dissolved in ethanol and why?

The product formed (hydroxybutanitrile) is optically inactive because the nitrile nucleophile can attack the propane at its carbonyl bond which is trigonal planar about it. There is an equal chance of it att...
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Answered by Aditya Y. • Chemistry tutor
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Why is cyclohexene able to react with bromine water, but Benzene isn't

Cyclohexene's structure is 6 carbons bonded in a ring, with a single double bond existing between carbons 1 and 6Benzene is also a 6 carbon ring, however it has a delocalised electron ring around the structu...
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What is the order of decreasing acidity for the molecules phenol, ethanoic acid and ethanol? Why?

Ethanoic acid is the most acidic of the three. This is because once ethanoic acid has lost a proton the negative charge can be spread over two oxygen atoms via two resonance forms. Oxygen atoms are electrone...
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Answered by Dan T. • Chemistry tutor
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