Periodic example sentences

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.Hydrogen with one electron in the 1s orbital occupies a unique position in the periodic table.It is interesting to note that the non-metals and metalloids exist only in the p-block of the periodic table.Silicon is group 14 element with a valence of 4; bromine belongs to the halogen family with a valence of Hence the formula of the compound formed would be SiBr Some periodic trends observed in the valence of elements (hydrides and oxides) are shown in Table Other such periodic trends which occur in the chemical behaviour of the elements are discussed elsewhere in this book.It was for such people that The Hindu had published a tiny announcement in an insignificant corner of an unimportant page a short story contest organised by a British periodical by the name The Encounter.Mendeleev s Periodic Law was, therefore, accordingly modified.The sales journal is also totaled periodically (generally monthly), and this total is credited to sales account in the ledger.A business firm periodically prepares a bank reconciliation statement to reconcile the bank balance as per the cash book with the passbook as these two show different balances for various reasons.A modern version, the so-called long form of the Periodic Table of the elements (Figureure 2), is the most convenient and widely used.Work on the radioactive decay series for uranium and thorium in the early years of twentieth century was also guided by the Periodic Table.Some members prefer to pay lump sum amount as life membership fee instead of paying periodic subscription.In this section we shall discuss the periodic trends in certain physical and chemical properties and try to explain them in terms of number of electrons and energy levels.The bills receivable book, like any other subsidiary book, is totaled periodically.de Chancourtois in 186 He arranged the then known elements in order of increasing atomic weights and made a cylindrical table of elements to display the periodic recurrence of properties.Seaborg, the discoverer of this element, in recognition of the pioneering role of the great Russian Chemist who was the first to use the periodic system of elements to predict the chemical properties of undiscovered elements, a principle which has been the key to the discovery of nearly all the transuranium elements.