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C O, N O, N 2 O ).Īmphoteric oxides behave as acidic with bases and as basic with acids, whereas neutral oxides have no acidic or basic properties.

Oxides of elements in the centre are amphoteric. The element on extreme right is the most acidic. The normal oxide formed by the element on extreme left is the most basic. (3) Reactivity with Oxygen : Elements on two extremes of a period easily combine with oxygen to from oxides. (2) Metallic and non-metallic Properties : We move left to right in a period metallic property decreases and non-metallic property increases. Following statements regarding the periodic trends of chemical reactivity of the. (1) Reactivity of Oxidation and Reduction : Extremely left elements of periodic table are reducing agent and extremely right elements of periodic table are oxidising agent. (Exception : Noble gas)Įlements are more reactive in both of the side and elements are less reactive in middle in periodic table.Įlements are situated very left side (Alkali metals) have tendency to lose one electron and elements are situated right side (Halogen) have tendency to gain one electron and becomes negative. So, we can say that in period ionisation enthalpy is very less in left side and electron gain enthalpy is very high and negative in right side. Just some of the chemical reactions performed so far by The Periodic Table of Videos.More chemistry at. So, ionisation enthalpy increases in period and value of electron gain enthalpy becomes more negative. When we go left to right atomic radius and ionic radius decreases.