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16 Nov 2019
What is the energy of a phonon of electromagnetic radiation with a wavelength of 508.2 nm? a. 3.9 times 10 J b. 3.97 times 10 J c. 3.91 times 10 J d. 5.9 times 10^14 J e. 1.12 times 10 J What is the total number of orbital's having n - 2 and l - 17 a. 1 b. 3 c. 5 d. 7 e. 10 A is orbital has? a 2 planar nodes and 1 spherical node. b. 3 planar nodes and 0 spherical modes. c. 0 planar nodes and 0 spherical nodes. d. 0 planar nodes and 3 spherical nodes. e. 1 planar node and 4 spherical nodes. A Is orbital has? a. 2 planar nodes and spherical node. b. 3 planar nodes and 0 spherical nodes. c. 0 planar nodes and 0 spherical nodes. d. 0 planar nodes and 3 spherical nodes. e. 1 planar node and 4 spherical nodes. Which of the following statements is/are CORRECT? 1. A diamagnetic substance is strongly attracted to a magnetic field. 2. Substances that retain their magnetism after they are withdrawn from a magnetic field are called ferromagnetic. 3. Most transition metals and all lanthanide metals are ferromagnetic. a. 1 only b. 2 only c. 3 only d. 1 and 3 e. 1, 2, and 3 How many electrons can be described by the following quantum numbers: n = 4, l = 2,^m t = 2, m_s = -1/2 a.1 b. 2 c. 6 d. 10 e. 18 Which of the following electron configurations is not allowed? a. 1s^2 2s^2 2p^5 b. 1s^22s^22p^6 c. 1s^22s^4
What is the energy of a phonon of electromagnetic radiation with a wavelength of 508.2 nm? a. 3.9 times 10 J b. 3.97 times 10 J c. 3.91 times 10 J d. 5.9 times 10^14 J e. 1.12 times 10 J What is the total number of orbital's having n - 2 and l - 17 a. 1 b. 3 c. 5 d. 7 e. 10 A is orbital has? a 2 planar nodes and 1 spherical node. b. 3 planar nodes and 0 spherical modes. c. 0 planar nodes and 0 spherical nodes. d. 0 planar nodes and 3 spherical nodes. e. 1 planar node and 4 spherical nodes. A Is orbital has? a. 2 planar nodes and spherical node. b. 3 planar nodes and 0 spherical nodes. c. 0 planar nodes and 0 spherical nodes. d. 0 planar nodes and 3 spherical nodes. e. 1 planar node and 4 spherical nodes. Which of the following statements is/are CORRECT? 1. A diamagnetic substance is strongly attracted to a magnetic field. 2. Substances that retain their magnetism after they are withdrawn from a magnetic field are called ferromagnetic. 3. Most transition metals and all lanthanide metals are ferromagnetic. a. 1 only b. 2 only c. 3 only d. 1 and 3 e. 1, 2, and 3 How many electrons can be described by the following quantum numbers: n = 4, l = 2,^m t = 2, m_s = -1/2 a.1 b. 2 c. 6 d. 10 e. 18 Which of the following electron configurations is not allowed? a. 1s^2 2s^2 2p^5 b. 1s^22s^22p^6 c. 1s^22s^4
Elin HesselLv2
6 Aug 2019