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What are Van der Waal forces ?

Van der Vaal forces are temporarily induced dipole forces. At any given time, the density of electrons in 1 atom will repel the electrons in another closely located atom, creating a dipole. Van der waal forc...
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Answered by Saron T. • Chemistry tutor
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What is the difference between London dispersion forces and hydrogen bonds?

Both are a type of inter molecular forces which means they act between more than 1 molecules. Do not confuse them with intra molecular forces acting within 1 molecule. London dispersion forces act between al...
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Answered by Daria S. • Chemistry tutor
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How does a change in temperature affect the Kc value when the forward reaction is exothermic?

To explain this I will use a made up example question: A 2(g) + B 2(g) <-> 2AB Change in enthalpy= Negative remember: according to Le Chatlier's principle, if a system in equilibrium is subjected to ch...
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Answered by Ruairi O. • Chemistry tutor
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Compare and contrast the structures of Diamond and Magnesium in terms of the position and interactions of particles within the substance. Comment on how this is reflected in their properties.

Diamond is a giant covalent structure of Carbon atoms in which every atom makes 4 covalent bonds , each with another Carbon atom, forming a regular tetrahedral structure. This results in a very hard substanc...
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Answered by Poppy H. • Chemistry tutor
5567 Views

Explain the trends in reactivity as you move down group one elements.

As you move down group one atomic radius increases. As a result the attraction to outer electrons is weaker. As there are an increased number of energy levels, shielding to the outer electrons also increases...
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Answered by Jack J. • Chemistry tutor
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