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Which element, Na or Mg is likely to have the higher melting point? Give reasons for your choice

Sodium and Magnesium are both metals, when they are solid they form a metallic lattice held together by the electrostatic force of attractive between the positive metal ions, and the negative delocalised ele...
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Answered by Monique P. • Chemistry tutor
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Explain the geometry and bond angles in a NH3 molecule

So if we think about a molecule of ammonia, NH3, there are 3 hydrogens, each with 1 electron (as its atomic number is 1) covalently bonded to 1 nitrogen atom with 5 outer shell electrons on it due to its ato...
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Answered by Anthony L. • Chemistry tutor
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What is orbital hybridisation and its relevance?

In atoms, electrons arrange in different shells (K, L, M...), each holding a number of orbitals (s, p, d, f...). Each orbital holds a maximum of 2 electrons. In some circumstances, a number of orbitals mix t...
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Name 2 products formed by burning fossil fuels which cause harm to the environment.

Carbon dioxide causes global warming which consequently leads to enhanced melting of polar ice caps and rising sea levels. Carbon particles lead to formation of smog which blocks out sunlight and causes dimm...
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Answered by Sophie C. • Chemistry tutor
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Describe the structure and bonding in diamond.

Answer: Diamond is organised in a giant lattice structure with strong covalent bonds between carbon atoms. Each carbon atom forms 4 bonds. Explanation: Each carbon atom has four electrons in its outer shell,...
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Answered by Anuska R. • Chemistry tutor
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