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What is p-block element ? Discuss gases element and metallic properties of p-block elements. |
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Answer» Solution :General electronic CONFIGURATION of p-block element is `ns^(2)sp^(1) " to " ns^(2) np^(6)`. NOBLE Gases : The p-block elements comprise those belonging to group 13 to 18 and these together with the s-block elements are called the representative elements or main group elements. The outermost electronic configuration varies from `ns^(2)np^(1) " to " ns^(2)np^(6)` in each period. Halogens Elements : The noble gases thus exhibit very low chemical reactivity. Preceding the noble gas family are two chemically important groups of non-metals. They are the halogens (Group-17) and the chalcogens (Group-16). Chalcogens Elements : `16^(th)` group of elements are known as chalcogens group. Electron gain enthalpy of these group is very high. Elements of group 16 accept 2 electrons and form octate state LIKE noble gas. O, S, Se, Te elements present in 16. group. Metalic and non-metalic Properties : When we go left to RIGHT in p-block non-metalic property increases. When we go for top to BOTTOM metalic property increases. |
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