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The central metal ion is Co..It coordination number is 6.The oxidation state can be given as:X-6 = -3X= +3Oxidation state is +3.
d-orbital occupation is t2
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કાર્યસદ્વશ અંગો:સરખો દેખાવ અને સરખા કાર્ય કરતાં પરંતુ પાયાની સંરચના અને ઉત્પત્તિની દ્વષ્ટિએ તદ્દન ભિન્ન હોય તેવાં અંગોને કાર્યસદ્વશ અંગો કહેવાય છે.ઉદા., તરીકે કીટકોની પાંખ અને વિહગની પાંખની સંરચનામાં તફાવત છે. આ બંને અંગોના ઉદભવસ્થાન જુદાં જુદાં હોય છે. કીટકની પાંખ બાહ્યસ્તરમાંથી ઉદભવે છે, જ્યારે પક્ષીની પાંખ અગ્ર ઉપાંગનું રૂપાંતર છે.જુદા જુદા પ્રાણીઓમાં કાર્યક્ષમ અંગોની હજરીના પુરાવાઓ સમજાવે છે કે આ પ્રાણીઓ સામાન્ય પૂર્વજમાંથી ઉદ્દભવ્યા નથી, પરંતુ વાતાવરણમાં જીવંત રહેવા પ્રબળ બની સમાન કાર્યો કરે છે. રચનાસદ્વશ અંગો: સમાન ઉત્પત્તિ તેમજ રચનાની દ્વષ્ટિએ સામ્ય ધરાવતાં પરંતુ ભિન્ન કાર્યો કરતાં અબ્

Let the reaction is X →Y
This reaction follows second order kinetics.So that, the rate equation for this reaction will Rate, R = k[X]2 .....
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Time taken for the echo to reach the child s ear = 4 secondsTherefore time taken by the sound to reach the cliff = 42 = 2 secSpeed of sound
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Exothermic : In this heat is evolved during the reaction.

(i) Oxidation of methane in presence of air
CH4(g) + 202(g) → CO2(g) + 2H2O(l) + 890.0 kJ
(ii) Formation of sulphur trioxide
2SO2 + O2 →2SO3 + 46.9 kcal.
(iii) Oxidation of ammonia


Endothermic reaction: In this heat supplied to reaction to complete .
(i) Formation of hydrogen iodide
H2(g) + l2(g) → 2HI(g) – 51.9 kJ
(ii) Decomposition of calcium carbonate
CaCO3(s) → CaO(s) + CO2(g) – 177.8 kJ
(iii) Formation of carbon disulphide
C(s) + 2S(s) → CS2(l) – 92 kJ.

During this period nationalist groups became increasingly intolerant of each other and ever ready to go to war. The major European powers, in turn, manipulated the nationalist aspirations of the subject peoples in europe to further their own imperialist aims. The most serious source of nationalist tension in Europe after 1871 was the ares called the Balkans.

The Balkans which was a region comprising of geographical and ethnical variation comprising modern day Romania, Bulgaria, Albania, Greece, Macedonia, Croatia, Bosnia-Herzegovina, Slovenia, Serbia and Montenegro whose inhabitants were b

The dipole field intensity is parallel to the line joining the charges at points on the axial line or equatorial line of dipole.
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In the last lecture, M. Hamel told the importance of learning their own language. He pointed out that most of the people of Alsace pretended to be Frenchmen bu
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(a) In – to(b) He – I(c) About – for(d) And – but
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पिछले वर्ष मैं अपने सहपाठियों के साथ सूरजकुंड के मेले मे गया। वहाँ मैंने धागे व ऊन से निर्मित सुंदर-सुंदर छाते देखे। उन्हें देखकर ऐसा लगा कि ये बनने में बहुत ही आसान हैं। उन छातों को बेचने वाली स्त्रियाँ वहीं बैठकर और छाते भी बना रही थीं।
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Find CBSE, ICSE State Boards Textbook Solutions of Class 8 to 12 of all subjects. Read NCERT Textbooks Questions and Answers & Find Previous year solved papers.
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The reactionSO2Cl2 → SO2 + Cl2is a first order reaction with k = 2.2 x 10–5 s–1 at 320° CThus by using the first order
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