Role of Chemistry in Environmental Protection and Economic Development
Guess Paper – 2009
Class – X
Subject – Chemistry
(P- Block Elements)
Kalra sir 09460472649 kalra1977@rediffmail.com
Group 15 elements:
|Symbol |Atomic |Electronic configuration |
| |number | |
| |7 |[He]2s22p3 |
|N | | |
|P |15 |[Ne] 3s23p3 |
|As |33 |[Ar]3d104s24p3 |
|Sb |51 |[Kr]4d105s25p3 |
|Bi |83 |[Xe]4f 145d106s26p3 |
General introduction, electronic configuration, occurrence, oxidation states, trends in physical and chemical properties; nitrogen - preparation, properties and uses; compounds of nitrogen: preparation and properties of ammonia and nitric acid, oxides of nitrogen (structure only); Phosphorous-allotropic forms; compounds .of phosphorous: preparation and properties of Phosphine, halides (PCl3, PCl5) and oxoacids (elementary idea only)
Group 16 elements:
|Symbol |Atomic |Electronic configuration |
| |number | |
| |8 |[He]2s22p4 |
|O | | |
|S |16 |[Ne] 3s23p4 |
|Se |34 |[Ar]3d104s24p4 |
|Te |52 |[Kr]4d105s25p4 |
|Po |84 |[Xe]4f 145d106s26p4 |
General introduction, electronic configuration, oxidation states, occurrence, trends in physical and chemical properties; Dioxygen: preparation, properties and uses; simple oxides; Ozone. Sulphur - allotropic forms; compounds of sulphur: preparation, properties and uses of Sulphurdioxide; sulphuric acid: industrial process of manufacture, properties and uses, oxoacids of Sulphur
Class – X
Subject – Chemistry
(P- Block Elements)
Kalra sir 09460472649 kalra1977@rediffmail.com
Group 15 elements:
|Symbol |Atomic |Electronic configuration |
| |number | |
| |7 |[He]2s22p3 |
|N | | |
|P |15 |[Ne] 3s23p3 |
|As |33 |[Ar]3d104s24p3 |
|Sb |51 |[Kr]4d105s25p3 |
|Bi |83 |[Xe]4f 145d106s26p3 |
General introduction, electronic configuration, occurrence, oxidation states, trends in physical and chemical properties; nitrogen - preparation, properties and uses; compounds of nitrogen: preparation and properties of ammonia and nitric acid, oxides of nitrogen (structure only); Phosphorous-allotropic forms; compounds .of phosphorous: preparation and properties of Phosphine, halides (PCl3, PCl5) and oxoacids (elementary idea only)
Group 16 elements:
|Symbol |Atomic |Electronic configuration |
| |number | |
| |8 |[He]2s22p4 |
|O | | |
|S |16 |[Ne] 3s23p4 |
|Se |34 |[Ar]3d104s24p4 |
|Te |52 |[Kr]4d105s25p4 |
|Po |84 |[Xe]4f 145d106s26p4 |
General introduction, electronic configuration, oxidation states, occurrence, trends in physical and chemical properties; Dioxygen: preparation, properties and uses; simple oxides; Ozone. Sulphur - allotropic forms; compounds of sulphur: preparation, properties and uses of Sulphurdioxide; sulphuric acid: industrial process of manufacture, properties and uses, oxoacids of Sulphur