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An atom can become excited by the absorption of photons. Explain why only photons of certain frequencies cause excitation in a particular atom.

Electrons in an atom occupy discrete energy levels. An electron can only be excited to another level if it absorbs the exact amount of energy as the difference between the two levels. Therefore the energy of...
AJ
Answered by Arinjay J. • Physics tutor
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Explain why potassium has a greater first ionisation energy than rubidium.

The outer electron of potassium is closer to its nucleus than the outer electron for rubidium, as it has a stronger attractive force between the electron and the potassium nucleus. The outer electron for K a...
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Answered by Arinjay J. • Chemistry tutor
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How many real life examples do i need for application points?

The more real life application the merrier. Watching the news and keeping up to date with current global and domestic economic issues is a key for this exam. If you have more current and relevant examples, t...
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Answered by Ula E. • Economics tutor
2797 Views

How should i study for the exam?

Consindering this is an essay based subject, i would definitely suggest planning many, MANY essays! It may seem like a chore at first, but they will soon become your best friend when the exam date nears. Not...
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“Defiantly comic.” Consider this view of Chaucer’s presentation of his Wife of Bath.

An empirical form of Chaucer’s Wife of Bath, even today, would function as the antithesis of a typical woman. Therefore, to consider the patriarchal context which Chaucer would have seen around him as he cre...
AS
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