Question

has the bed C ) OD SOD HOLD When the action is balanced and contended to the lowest wholeme the coefficient ford i 19. Which statement about the quantum mechanical model of atomi FALSE? Ort reprobat maps for finding electrons Ortare specific path elections forow L ectron the cannot be described exactly Electrons do not have a particles The Guantum mechanical model describes only drogen atoms 20. Apure substance A is found to change upon heating into two new pure substances and Neither or can be decomposed by chemical methods. From this observation, we conclude A and Care topes A. and welcompounds A and Careements Aisancement and care compounds Als compound, and we elements 21. Onemer of a sin sealed chamber containing a moveable pistonIf the piston is moved to that the volume of the gas is compressed to volume of liter, what will happen to the pressure of the Assume the temperature is constant and parties are lost) The pressure will remain the same The pressure will be all the originale The pressure will be twice the original value d. would be impossible to move the pluton since ses we not compressible Pressure of the chamber conta When w e the tened to volume moveable piston man the r e is constater what wa The pressure with the memores con s moved so 22. Which of the following is considered transition element? on fre) indum in Cesium (C) Strontium Aluminium (A)

Answer 1

=> N₂ has highest Bond Energy. Because it contains a triple Covalent bond between it's adoms. NSN a Bond Energy is defined as amount of Energy required to Dissociate 1 mole of Bonds. = Triple covalent Boond is a stronger Bond. (2) Orbitals are specific paths electrons fallow- In Quantum Mechanical model of Atom we talk of Probabilities. => Electrons are considered to have wave naturel particle on the basis of Quantum mechanical model of Atom (3) H is a compound, B & C are Elements. eig H₂O molecules can be Electrolysed into Hag, & I Org. But these elements cannot be further decomposed. => All the three are in pure state. (4) AT Constant temperature Pressure at When Volume is decreased to half of its original I volume. The pressure will increase Twice 1/22 Transition Element in a d-block Element Which Show a transition in properties. - iron [Fe]. Volime