p-block Elements PPT Chemistry Class 12

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• appreciate general trends in the chemistry of 
elements of Group15,16,17 and 18.
• learn the preparation, properties and uses of 
dinitrogen and phosphorus and some of their 
important  compounds.
• describe the preparation,properties and           
uses of dioxygen and ozone and chemistry of 
somesimple oxides.
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• appreciate general trends in the chemistry of 
elements of Group15,16,17 and 18.
• learn the preparation, properties and uses of 
dinitrogen and phosphorus and some of their 
important  compounds.
• describe the preparation,properties and           
uses of dioxygen and ozone and chemistry of 
somesimple oxides.
• know allotropic forms of sulphur,chemistry of its important
compounds and the structures of its oxoacids
• describe the preparation, properties and uses of and        
Cl hydrochloric acid;
• know the chemistry of interhalogens and structures of
oxoacids of halogens;
• enumerate the uses of noblegases;
• appreciate the importance of these elements and their
compounds in our day to day life.
Page 5


• appreciate general trends in the chemistry of 
elements of Group15,16,17 and 18.
• learn the preparation, properties and uses of 
dinitrogen and phosphorus and some of their 
important  compounds.
• describe the preparation,properties and           
uses of dioxygen and ozone and chemistry of 
somesimple oxides.
• know allotropic forms of sulphur,chemistry of its important
compounds and the structures of its oxoacids
• describe the preparation, properties and uses of and        
Cl hydrochloric acid;
• know the chemistry of interhalogens and structures of
oxoacids of halogens;
• enumerate the uses of noblegases;
• appreciate the importance of these elements and their
compounds in our day to day life.
In Class XI, you have learnt that the p-block elements
are placed in groups 13 to 18 of the periodic table.
Their valence shell electronic configuration is ns2np1–6
(except He which has 1s2 configuration). The properties
of p-block elements like that of others are greatly
influenced by atomic sizes, ionisation enthalpy, electron
gain enthalpy and electronegativity. The absence of dorbitals
in second period and presence of d or d and f
orbitals in heavier elements (starting from third period
onwards) have significant effects on the properties of
elements. In addition, the presence of all the three types
of elements; metals, metalloids and non-metals bring
diversification in chemistry of these elements.
Having learnt the chemistry of elements of Groups
13 and 14 of the p-block of periodic table in Class XI,
you will learn the chemistry of the elements of
subsequent groups in this Unit