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Predict the bond angles and shape of a molecule of ammonia.

There are four (4) groups of electrons around the central nitrogen atom (3 shared pairs and one lone pair of electrons)2) According to electron repulsion theory, the electrons move further away from each oth...
NB
Answered by Nathan B. • Chemistry tutor
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How might I go about balancing chemical equations?

First let us look at what the specification asks of you as a student: E.g. AQA GCSE chemistry specification 4.3.2.3 Using moles to balance equations (HT only) The balancing numbers in a symbol equation can b...
CG
Answered by Claudia G. • Chemistry tutor
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How does the first ionization enthalpy change down group 2?

First ionization enthalpy is the energy required to remove one electron from each atom in one mole of gaseous atoms, forming one mole of gaseous 1+ ions. The first ionization enthalpy is largely dependent on...
MS
Answered by Matthew S. • Chemistry tutor
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How do you draw an alkene stereoisomer?

Definition of Stereoisomer The meaning of a stereoisomer is compounds with the same structural formula but a different arrangement of atoms in space. How to Draw You start by drawing the Carbon to Carbon dou...
HM
Answered by Hussain M. • Chemistry tutor
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Why does iodine have a higher boiling point than chlorine?

Iodine is a larger molecule, with more electrons, than chlorine. Therefore Iodine has stronger intermolecular forces than chlorine, which require more energy to break. This results in Iodine having a higher ...
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Answered by Ben W. • Chemistry tutor
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