Calcium

I. The origin of atomic number 20 is dated back to the first atomic number 6 when Romans would prepare lime, which has atomic number 20 in it. At that time, it was know as calx notwithstanding it in reality originated from the Latin cry 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 hydrargyrum and because of this, Davy thought of separate Calcium, an impure surface, by way of electrolyzation. alone not until the twentieth century was calcium abundantly available. basswood is now know as calcium. Calciums type is Ca with an nuclear number of 20 and its atomic throng is 40.078 amu. Its placed in the second group of the semiannual table, which makes it an alkalic dr y land surface. 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 manipulable 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(prenominal) chemically reactive than other alkaline earth metals.

[6]At well-worn state, it is solid at 298 K, which is almost 77 degrees Fahrenheit. Its thawing take 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 crysta l structure. [3] And its atomic structure lo! oks standardized this: [4] With the above atomic structure, its electron abidance is: 1s22s22p63s23p64s2 with short relegate 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 regard of milk and when people think of milk, they think...If you fate to get a full essay, order it on our website: OrderCustomPaper.com

If you want to get a full essay, visit our page: write my paper