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Explain how the electron pair repulsion theory can be used to deduce the shape of, and the bond angle in, NH3.

Nitrogen has 5 valence electrons in its outer shell. Each Hydrogen has 1 valence electron in its outer shell, so the 3 Hydrogens donate 3 electrons in total. This gives 8 valence electrons in total. We can t...
MN
Answered by Matthew N. • Chemistry tutor
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What is a disproportionation reaction?

A disproportionation reaction is when an element is both oxidised and reduced in the same reaction. You check this by looking at the oxidation state of the element at the begining of the reaction and then wh...
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Answered by Mia V. • Chemistry tutor
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What is an isomer?

Isomers are molecules which have the same molceular formula but have a different arrangement of atoms in space. This does not include when molecules have been rotated as their arrangment of atoms is still th...
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Answered by Anna N. • Chemistry tutor
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What is benzene and describe the 2 models used to explain it's structure. Provide a piece of evidence to show which of these models is incorrect.

Benzene With a formula of C 6 H 6 , the molecule has a cyclic structure due to it's 6 carbon atoms joined in a ring. It is symmetrically planar (flat) with it's 6 hydrogen's sticking out in the same plane. T...
AM
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When composing a mechanism in organic chemistry, how do I use curly arrows?

There are a few things to learn about the use of curly arrows. Once you've grasped the basics, though, you'll be able to use them with simplicity and clarity no matter how complicated the mechanism is! The f...
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Answered by Marc L. • Chemistry tutor
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