The electron is the part of an atom that is either gained, lost, or shared during a chemical reaction.
Ammonia is NH3, meaning there are three bonds. All three bonds are between nitrogen and hydrogen, one each per hydrogen atom. If dissolved in water, they can also be called ammonium hydroxide. (NH4OH)
Answer:
electrons are fermions, they can only access an energy level if it has not already been occupied by another electron. Thanks to this principle, there is a minimum energy level within the atom and it is not possible for an electron to collapse to the nucleus because it cannot exceed this} threshold.
Explanation:
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Chemical energy is released
Limestone is easily weathered by acid rain. When rain mixes with gases such as sulfur dioxide and carbon dioxide in the atmosphere, acid rain is formed (sulfuric acid and carbonic acid respectively). When the rain precipitates and meets with limestone which is CaCO3, it is weathered a shown by the formulae; 2CaCO₃ (s) + H₂CO₃ → 2CaHCO3 (aq)
Geographical features formed as a result of weathering of limestone in rocks are caves, stalactites, and stalagmites.