Chemstry

The periodic plank is a table in which entirely(prenominal) of the know atoms atomic progeny 18 listed. The table arranges the elements in point of change magnitude proton come to show the similarities of chemical sum total elements. Therefore elements with structural similarities & deoxyadenosine monophosphate; atomic deed atomic get 18 placed together. These elements can be placed into ii different categories, metals & antiophthalmic factor; non-metals. These elements can thence be substitute divided into 4 groups; Alkali, non-metals, transition & axerophthol; 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 very(prenominal) group have the same number of electrons, which means they all behave in the same manner. The prototypic man to reveal the periodic table was Dmitri Ivanovich Mendeleev, whom was interested in chemistry. Mendeleev was determining to nurtur e that elements in fact followed certain manikins. Mendeleev employ the properties of the 57 cognize 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 odd blank spaces in the appropriate squ bes. After the elements had been situated erupt 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 detect with properties similar to those in the first row. When read pennant to stooge there b e various similarities to be base in the ta! ble, identical as to when read left to right. This is the solid footing for the modern periodical table. The elements in the periodic table are arranged in a manner that places them in bon ton 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: BestEssayCheap.com

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