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Moving across a period the number of protons and neutrons that make up the nucleus of the element increases. The increase in the number of positively charged protons results in an increased nuclear charge...
Le Chatelier's Principle states the if a change is applied to a system in equilibrium, then the position of equilibrium will move to counteract that change. So, if the pressure was increased for a reactio...
So, lattice enthalpy of formation is defined as the 'standard enthalpy change when one mole of an ionic crystal lattice is formed from its constituent ions in gase...
Moving down Group 2, the atomic radius increases as there are more electron shells. This also means that the outermost electrons are more shielded from the positive charge of the nucleus. This decreases t...
Add one of the following: barium chloride, barium hydroxide, barium nitrateObservation with potassium nitrate: colourless solution/ or no visible change or reaction) Observation with potassium sulfate: wh...
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