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molecular structure chemical bonding and molecular structure periodic properties atomic models some basic concepts of chemistry structure of atom organic chemistry chemistry alkanes isomerism atomic structure classification of elements bases alkynes chemical bonding halo alkanes gaseous state gas laws properties of gases thermodynamics laws of thermodynamics halo arenes alkenes hydrocarbons iupac nomenclature ncert chapter1 class xi structural isomers acids aryl halides atomic theory atom electrons periodic trends structure basics states of matter hydrogen thermo chemistry basics of chemistry alkyl halides rate of reaction first order chemical kinetics surfactant chemisorption alcohols catalyst adsorption absorption surface chemistry isolation protons general principles molecules sulphur ethers oxygen phenols nitrogen electronic configuration redox reactions oxidation reduction atomic radius periodic table p- block elements boron hydrogen peroxide water s- block elements periodicity elements equilbrium environmental chemistry density of unit cell fcc unit cell solids bcc solute saturated solution solvent solution second order half life period stoichiometry effects in organic compounds such as inductive eff hyperconjugation types of organic compounds resonance electromeric effect basic principles in organic chemistry. basics of o benzene ddt chloroform carbon tertrachloride cfc material questions and answers ph of the substance. arrhenius theory functional group thermochemistry gases and liquids periodic properties of elements periodic classification of elements periodicity in elements chemical arithmetics chemical arithmetic calculations in chemistry basic concepts of chemistry reaction intermediates carbanions carbocations reaction mechanism different types of organic reactions organic chemistry nomenclature organic nomenclature ncert class 11 chapter2 chemical change transition elements lanthanides f block d block pvc polymers soaps insecticides proteins biomolecules rna vitamins dna amines ketones carboxylic acids aldehydes physical change synthesis conversions basic conversions geometrical isomers cis-trans isomers optical isomers jee weightage analysis topics ncert syllabus complexes coordination compounds complex compounds actinides p block