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cis/trans isomerism requires a double bond for restricted rotation about the bond, two different groups on each carbon of the double bond and at least one of the groups on each carbon of the double bond a...

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...

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 ...

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...

I cannot stress this answer enough, but, ALL of them. TWICE, at least. When it comes to Maths, past papers will without a doubt be the key to unlock your target grade. Success in maths comes with practice...