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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...

1. Ionisation energy is the energy required to remove 1 mole of electrons from each atom in 1 mole of gaseous atoms to form 1 mole of gaseous ions.For...

In a chemical equilibrium, the position of the equilibrium will always move to oppose any change in temperature, pressure or concentration of reactants/products. For example, if temperature is increased, ...

Imagine the reaction A + B <-> C+D where the forward reaction is exothermic. If we increase the temperature of the surroundings, the equilibrium is going to shift to the direction that reduces the t...