Ca/Au reactions with water?
Calcium metal, Ca, reacts with water, but not with gold metal, why?
Answer:
Calcium is a more electropositive metal than Gold. This means that Ca metal likes to part of its two electrons to come up with a cation with 2 positive charges which has the same electronic configuration as the stable noble gases. By losing electrons, calcium essentially preferred being a cation since it affords a more stable configuration.
On the other hand, Gold by itself has a "pseudo stable electronic configuration" which means it does not want to react or part of its electrons. It is this main property that gold is so prized a metal. It does not react, which means it does not tarnish as other metals, it does not corrode so it does not lose it beautiful luster, etc. Note that the other metal in this group is silver, another prized metal, because it has the same property of inertness to water for the most part. Of course, very strong oxidizing agents, under strong conditions will react with gold and silver. For example, it reacts with gaseous chlorine ( not chloride). but not with water.
Ca and Au have different chemical properties.
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Answer:
Calcium is a more electropositive metal than Gold. This means that Ca metal likes to part of its two electrons to come up with a cation with 2 positive charges which has the same electronic configuration as the stable noble gases. By losing electrons, calcium essentially preferred being a cation since it affords a more stable configuration.
On the other hand, Gold by itself has a "pseudo stable electronic configuration" which means it does not want to react or part of its electrons. It is this main property that gold is so prized a metal. It does not react, which means it does not tarnish as other metals, it does not corrode so it does not lose it beautiful luster, etc. Note that the other metal in this group is silver, another prized metal, because it has the same property of inertness to water for the most part. Of course, very strong oxidizing agents, under strong conditions will react with gold and silver. For example, it reacts with gaseous chlorine ( not chloride). but not with water.
Ca and Au have different chemical properties.
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