Calcium

I. The origin of calcium is dated back to the first hundred when Romans would prepare lime, which has calcium in it. At that time, it was know as calx but it in reality originated from the Latin word calcis[3]. Then, during 975 AD, it was tell that plaster of paris was used which also had calcium In it. It was not until Sir Humphrey Davy, in England, during the year 1808, isolated Calcium. He actually got his idea from Jöns Jacob Berzelius and M. M. Pontin. Berzelius and Pontin were trying to prepare calcium dental amalgam by electrolysing lime in mercury and because of this, Davy thought of separate Calcium, an impure surface, by way of electrolyzation. But not until the twentieth century was calcium abundantly available. Calx is now known as calcium. Calciums symbol is Ca with an nuclear number of 20 and its atomic mass is 40.078 amu. Its placed in the second group of the periodic table, which makes it an alkalic dry land metal. It is considered a hard metal and its color is a get going of grey and silver. [1] With calcium being a metal, it can distribute electricity, its malleable and it has low electronegativity amongst other properties that nitty-gritty up a metal element.[2] It is also a trimorphic metal and also less chemically reactive than other alkaline earth metals.



[6]At standard state, it is solid at 298 K, which is almost 77 degrees Fahrenheit. Its melting point and stewing point are two very, very high. Its melting point is at 1115 K and its boiling point is 1757 K. It has a cubic crystal structure. [3] And its atomic structure looks like this: [4]

With the above atomic structure, its electron abidance is: 1s22s22p63s23p64s2 with short hand being [Ar]4s2. [3] Meanwhile, isotopes have the same electron configuration but its atomic mass changes. Calcium has 7 isotopes with a known natural abundance. [5] Those isotopes are: 40Ca, 42Ca, 43Ca, 44Ca, 46Ca, 48Ca. II. Generally, when reflexion calcium, people think of milk and when people think of milk, they think...If you fate to get a full essay, order it on our website: Orderessay



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