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Why do the atomic radii of the elements decrease across a period on the periodic table.
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Related A Level Questions
What is the acid dissociation constant, Ka of the 0.150 mol dm–3 solution of weak acid HA with pH of 2.34?
Potassium Chlorate(VII) decomposes to produce Potassium Chloride and Oxygen. Using the following data calculate the enthalpy change of this decomposition: Enthalpy of formation(KClO4) = -430 kJ mol-1, Enthalpy of formation(KCl) = -440 kJ mol-1
What product would you expect to obtain when reacting ethanal (or acetaldehyde) with potassium cyanide (KCN) in dilute acid? Draw a curly arrow mechanism for this transformation, and determine whether you obtain one enantiomer or a racemic mixture.
Explain how a catalyst works to increase the rate of reaction
Can you explain the trend in ionisation energy across the periodic table?
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