Alkali example sentences

Thus, the maximum chemical reactivity at the extreme left (among alkali metals) is exhibited by the loss of an electron leading to the formation of a cation and at the extreme right (among halogens) shown by the gain of an electron forming an anion.The solutions which resist change in pH on dilution or with the addition of small amounts of acid or alkali are called Buffer Solutions.For alkali metals and halogens, as we descend the groups, the principal quantum number (n) increases and the valence electrons are farther from the nucleus.This situation occurs in the case of alkali metals which have a lone ns-outermost electron preceded by a noble gas electronic configureuration.For example, the Group 1 elements (alkali metals) all have ns1 valence shell electronic.In the states of Punjab, Haryana, western Uttar Pradesh, over irrigation is responsible for land degradation due to water logging leading to increase in salinity and alkalinity in the soil.This situation occurs in the case of alkali metals which have a lone ns-outermost electron preceded by a noble gas electronic configureuration.Alkaline potassium permanganate or acidified potassium dichromate are oxidising alcohols to acids, that is, adding oxygen to the starting material.It is a powerful reducing agent and reduces almost all metal oxides other than those of the alkali and alkaline earth metals, aluminium and a few transition metals.On the other hand, minima occur at the alkali metals and their low ionization enthalpies can be correlated with their high reactivity.The exocrine portion secretes an alkaline pancreatic juice containing enzymes and the endocrine portion secretes hormones, insulin and glucagon.Crucibles made from graphite are inert to dilute acids and alkalies.Boron does not react with acids and alkalies even at moderate temperature; but aluminium dissolves in mineral acids and aqueous alkalies and thus shows amphoteric character.Likewise within a group of representative metals (say alkali metals) reactivity increases on moving down the group, whereas within a group of non-metals (say halogens), reactivity decreases down the group.Soils in the drier areas are more alkaline and can be productive after proper treatment and irrigation.