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Explain the trend in Ionisation energy when moving across a period and down a group

Key definitions/explanation of terms Ionisation energy is the energy required to r emove one mole of electrons from one mole of gaseous atoms to produce one mole of gaseous ions with a 1+ charge. Electron sh...
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Answered by Olivia F. • Chemistry tutor
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Explain which species is oxidised in this reaction: Br2 +2I– = 2Br– +I2

A useful way to answer oxidation/reduction questions is to remeber the acronym OIL RIG: O xidation I s L oss (of electrons) R eduction I s G ain (of electrons) In this example Iodine is going from 2I- to I2 ...
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Answered by Rory B. • Chemistry tutor
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Explain which species is oxidised in this reaction: Br2 +2I– 2Br– +I2.

A useful way to answer oxidation/reduction questions is to remeber the acronym OIL RIG: O xidation I s L oss (of electrons) R eduction I s G ain (of electrons) In this example Iodine is going from 2I- to I2 ...
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Answered by Rory B. • Chemistry tutor
10225 Views

Explain why the second ionisation energy of boron is higher than the first ionisation energy of boron?

Boron is the 5th element in the periodic table, and has an electron configuration 1s 2 2s 2 2p 1 . The first ionization energy of Boron is the energy required to remove the single 2p electron, while the seco...
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Answered by Henry P. • Chemistry tutor
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What's the difference between an electrophile and a nucleophile?

It's really useful to know that 'phile' means love.Electrophiles 'love' negative charge - this means they are attracted to regions of negative charge. And as such they tend to be positively charged.Similaril...
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Answered by Henry P. • Chemistry tutor
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