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A C to C double bond has a high electron density. As the bromine gets close to the C=C bond the high electron density repels the electrons in the H-Br bond further towards the H making the H slightly n...

Avogadro's number is simply used as a way of telling us how much of a substance we have. 

The number is 6.022 x 10²³, and if we have that number of particles, we can make it ea...

This molecule is v-shaped. There are three areas of electron density surrounding the central sulfur atom, these three areas of electron density repel as far apart as possible, explained by the VSEPR th...

Ammonia acts as the Lewis base in this reaction by donating its lone pair of electrons, whilst Cu2+ (which is an electron deficient, electrophile) accepts the lone pair of electrons from the ammonia, maki...

An atom of hydrogen contains 1 proton, 1 electron and 0 neutrons. When hydrogen loses an electron to become H+ only a proton remains. 

We can work out the number of neutrons an atom has by...