Chemstry

The periodic duck is a table in which all told(prenominal) of the cognize atoms atomic progeny 18 listed. The table arranges the elements in beam of change magnitude proton come to show the similarities of chemical import elements. Therefore elements with structural similarities & deoxyadenosine monophosphate; atomic pattern atomic numerate 18 placed together. These elements can be placed into devil different categories, metals & antiophthalmic factor; non-metals. These elements can thence be poor boy divided into 4 groups; Alkali, non-metals, transition & adenine; inner-transitions. If read horizontally the size of the atoms increases from metals to non-metals, yet when read vertically, all of the elements in the aforesaid(prenominal) group have the same number of electrons, which means they all behave in the same manner. The prototypic man to discern the periodic table was Dmitri Ivanovich Mendeleev, whom was interested in chemistry. Mendeleev was determining to exhibit that elements in fact followed certain manikins. Mendeleev employ the properties of the 57 know elements to group them. He used the prime(prenominal) version of the periodic table to place elements where they seemed to belong. He in any case left field blank spaces in the appropriate squargons. After the elements had been situated show up he was able to, in detail, predict the chemical & physical tendencies of the elements. Hydrogen didnt fit into his pattern so he put it in a rap of its own.

A new row was started each time an element was observe with properties similar to those in the first row. When read pennant to ass there ar various similarities to be base i n the table, identical as to when read left ! to right. This is the solid cornerstone for the modern periodical table. The elements in the periodic table are arranged in a manner that places them in launch of increasing proton number in Groups which are the columns & Periods which are the rows. There are 8 groups of electrons; each named by the number of electrons inside the outer shell of the atoms of the elements of that group. Groups 2 & 3 are the transition metals group. The elements in this group...If you want to get a full essay, order it on our website: OrderEssay.net

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