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Atomic orbital and calculate oxidation number assignment

Q1-Q8 (1MARKS EACH) Q9-Q18 (2MARKS EACH). Q19-Q27 (3 MARKS EACH) Q28-Q30 (5 MARKS EACH) …………………………………………………………….. Q1. State law of constant composition. Q2. Howe 0. 5m of NaOH different from 0. 5M ofNaOH? Q3. State Heisenberg uncertainity principal. Q4. Write general electronic configuration of d-block elements. Q5. Define Resonance. Q6. What is compressibility factor? Q7. Define Buffer solution? What is common ion effect? Q8. What is Demineralised water? Q9. Calculate the concentration of nitric acid in moles per litre in a sample which has a density of 1. 1g/ml and mass% of nitric acid is 69%. Q10. Calculate energy of one mole of photons of radiation whose frequency is 5x10raise to power 10 Hz. (page 39. Q. 1) Q11. Write down the electronic configuration of copper and chromium. Q12. Calculate the wavelength of 100 gm of particle moving with a velocity of 100m/s. Q13. Complete the following:- a) Na? O+H? 0– b) Cl? 07+H? 0——- Q14:- Write resonance structure of NO? and SO3? Q15. :-What is electro negativity. How it is different from election gain enthalpy? Q16. on a ship sailing in pacific ocean where temp. s 23. 4? C a ballon is filled with 2L air what will be the volume of balloon when ship reaches Indian ocean where temp. is 26. 1? C? (page no. 139) Q17. For the reaction 1. 2Cl(g)———-Cl? (g)What are the signs of ? H and ? S. 2. Define Enthalpy? Q18. Calculate pH of 0. 2MH? SO4 solution? Q19. :- 1. An atomic orbital has n= 3 What are the possible values of 1 and m? 2. List the quantum numbers(m and 1) of electrons for 3d orbital 3. Which of the following orbital’s are possible 1p, 2s, 2p and 3f Q20. 1. Write IUPAC name of element with atomic number 120. . Which of the following species will have layout and smallest size Mg, Mg? +, Al, Al3+ 3. Why cautions are smaller than anions in radii than their parent atoms? Q21. Discuss the shapes of following molecules on the basis of VSEPR model. 1. SiCl4 2. PH3 3. H? 0 Q22. 1. Why do real gases deviate from ideal gas behavior 2. Write vander wall’s equation? Q23. What do you understand by the following 1. Entropy 2. Gibbs free energy 3. 2nd law of thermodynamics Q24. The enthalapy of combustion of methane, graphite and dihydrogen at 298K Are -393. 5KJ/mol,-285. KJ/mol respectively. Calculate enthalapy of formation of methane? Q25. 1)Give the conjugate acid and base of following: a) H? O b) HSO4 2) Define solubility product? Q26. The solubility of AgCl in water at 298K is 1. 06×10 raise to power -5mol/litre. Calculate its solubility product at this temperature? Q27. Complete the following a) PbS(s)+H? O? (aq)> b) CaO(s)+H? O(s)> c) AlCl? (s)+H? O(l)> Q28. 1) Calculate oxidation number of underlined element in the following :- a) NaHSO? b) K? MnO? 2) How will you justify that following are Redox reactions ) CuO(s) +H? (g)> Cu(s)+H? O(g) b)Fe? O? (s)+ 3CO(g)> 2Fe(s)+ 3CO? (g) OR 1. ) What are the different types of Redox reactions ? Give examples? 2) Balance the following reaction by oxidation number method:- MnO?? +Fe?? > Mn?? +Fe?? +H? O(acidic medium). Q29:- 1) Define hydrogen bonding? What are different types of hydrogen bonds? Give examples? 2) Calculate bond order of O? , O?? , O??? and indicate their magnetic properties OR Draw molecular orbital energy level diagram of O? and N?. Calculate their bond order.

Write electronic configuration and predict their magnetic behavior? Q30. :- 1)Give Lowry-Bronsted concept of Acid and Base? 2)What is kc for the following reaction at equilibrium? 2SO? (g)+O? (g)-2O? (g) Given [SO? ]= 0. 6M, [O? ]= 0. 82M and [SO? ]= 1. 90M OR 1)What do you understand by auto-protolysis of water? 2) What is diagonal relationship? Discuss diagonal relationship between lithium and magnesium? …………………………………………………………………………………………………………………………………………………………………………………………………………BEST OF LUCK FOR YOUR EXAM……………………………………………………………………………………….. BY LALIT.

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