chemistry

जाने वर्नर का सिद्धांत उदाहरण सहित समझाइए के अनुप्रयोग क्या है के कोई दो प्रमुख बिंदु लिखिए वर्नर का सिद्धान्त (Werner’s Theory) उन्नीसवीं शताब्दी के उत्तरार्ध में अधिकांश कार्य कार्बनिक यौगिकों पर केन्द्रित था। उस समय तक वैज्ञानिकों की रूचि यह जानने में जागृत हो चुकी थी कि किसी अणु…

जाने समन्वय संख्या क्या है , को उदाहरण देकर समझाइए , समन्वय मण्डल, समन्वय पोलीहेड्रॉन किसे कहते है ? उपसहसंयोजन यौगिक (Coordination Compounds  परिचय (Introduction) कुछ यौगिक आपस में संयुक्त होकर योगात्मक यौगिक बनाते हैं। इन यौगिकों के निर्माण लिए क्रियाकारी अणुओं के मध्य नये बंधों का बनना आवश्यक है।…

स्टीरियोरसायन त्रिविम रसायन क्या है परिभाषा बताइए stereochemistry in hindi pdf notes for BSc ? स्टीरियोरसायन (Stereochemistry) :- स्टीरियोरसायन में हम किसी केन्द्रीय परमाणु या आयन के चारों ओर अन्तराल (space) में परमाणु या समूहों की आपेक्षिक व्यवस्था के विषय में बताते हैं। इस प्रकार की व्यवस्था मुख्यतः समन्वय संख्या…

question : what makes glass different from quartz under what conditions quartz is converted into glass ? key points to answer this question : explain the glass property in point of view quartz and then differentiate both glass and Quartz on basis of their properties. solution : Glass is type…

question : define the term amorphous with example or amorphous definition and examples class 12 chemistry ? Key points to solve this question : remember the Amorphous word is a Greek word that contains the meaning ‘no form’ it means the Amorphous does not contain any type of form or…

question : a group 14 element is to be converted into n type semiconductor by doping it with a suitable impurity. To which group should this impurity belong ? key points to answer this question : first of all you have to remember that n type semiconductor means there is…

Question : Ionic solids , which have anionic vacancies due to metal excess defect , develop colour. Explain with the help of a suitable example ? key points to answer this question : first recall which thing is responsible in solids for colors , so remember the Free unpaired electrons…

question : Explain how vacancies are introduced in an ionic solid when a cation of higher valence is added as an impurity in it ? key points to remember answer of this question : first of all Recall the definition of impurity defects occurred in solids with examples also ,…

question : what type of stoichiometric defect is shown by (i) zns and (ii) agbr key points to remember answer this question : First of all you have to remember that there is very big difference between zns and agbr on the basis of size of ions present in zns…

question : An element with molar mass 2.7×10-2 kg mol-1 forms a cubic unit cell with edge length 405 pm. If its density is 2.7×103 kg m-3, what is the nature of the cubic unit cell ? Key points to answer this question : First of all we need to calculate the…