Question

Exam 3 An orbital with the quantum numbers n=5/= 2. m = -1 may be found in which subshell? A. 5f C. 5p B. 50 D. 5s The number of orbitals in a p subshell is A. 3 C. 2 B. 1 D. 5 Calculate AU of a gas for a process in which the gas absorbs 29 J of heat and does 31 J of work by expanding A. 2 B. 60 J C. -60) D. -2J Which of the following statements is not true for an exothermic reaction? A. Heat passes from the reaction system to the surroundings. B. The products have a higher heat content than the reactants. C. The temperature of the reaction system increases. D. The enthalpy change for the reaction is negative Under conditions of constant pressure, for which of the following reactions is the magnitude of pressure-volume work going to be smallest? A. 2NO(g) + O2(g) → 2N02(8) B. 2H2020) + 2H20(1) + O2(g) C. 2KCIOgs 2KCI(s) + 302(8) D. H2(g) + Cl2(g) → 2HCl(8) Which of the following statements about enthalpy is false? A. Enthalpy is a state function. B. At constant pressure, the enthalpy change is equal to the heat absorbed or released. C. Enthalpy is an extensive property. D. The change in enthalpy of a process cannot be negative. Which of the following statements is incorrect concerning the thermochemical equation below? 2503(g) → 2502(g) + O2(g); AH° = 198 kJ . The enthalpy of the reactants exceeds that of the products. 3. The reaction is endothermic. . For the reaction 250,(g) + O2(g) (g) 2503(g): AH = -198 kJ. . The external pressure is 1 atm. Based on the photoelectric effect, Einstein proposed the idea that 4. the wavelength of light is inversely proportional to its frequency

Answer 1

ANSWER - For S - l=0

For P - l=1

For d - l=2

For F - l=3 , where S,P,D and F are subshell and n is principal Quantum number and 'l' is orbital angular momentum and '(m_l)' is magnetic quantum number.

So, for the given question n=5,l=2,m_l=-1; so the required answer will be 5d .