Element example sentences

This group elements show a wide variation in properties.It is a remarkable demonstration of the fact that the chemical elements are not a random cluster of entities but instead display trends and lie together in families.Elements of the same group have similar valence shell electronic configureuration and, therefore, exhibit similar chemical properties.About 98 per cent of the total crust of the earth is composed of eight elements like oxygen, silicon, aluminium, iron, calcium, sodium, potassium and magnesium (Table 1), and the rest is constituted by titanium, hydrogen, phosphorous, manganese, sulphur, carbon, nickel and other elements.In simple language we can say that when two or more substances (elements or compounds) combine to form a single product, the reactions are called combination reactions.This would be possible mainly due to higher economic growth, increasing stress on universal free elementary education, declining population growth, increasing empowerment of the women and the economically weaker sections of society.An awareness of the Periodic Table is essential to anyone who wishes to disentangle the world and see how it is built up from the fundamental building blocks of the chemistry, the chemical elements.Within each series, the properties of the elements are quite similar.In this unit we will study the chemistry of group 13 and 14 elements of the periodic table.A different type of bacteria converts the nitrates and nitrites into elemental nitrogen.Mendeleev also had the foresight to leave gaps in the Periodic Table for elements unknown at that time and predict their properties from the trends that he observed among the properties of related elements.Scientists, before collecting the reliable data on the new element, at times get tempted to claim for its discovery.Thus, the electronic structures of these elements are more complex than for the first two groups of elements discussed in unit This difference in electronic structures affects the other properties and consequently the chemistry of all the elements of this group.Mendeleev arranged elements in horizontal rows and vertical columns of a table in order of their increasing atomic weights in such a way that the elements with similar properties occupied the same vertical column or group.For example, to form a tracheary element, the cells would lose their protoplasm.