Question

11 Rank the following types of electromagnetic radiation from shortest wavelength to longest wavelength Visible, ultraviolet, microwave, infrared, x-ray A X-ray visible ultraviolet <infrared <microwave B X-ray ultraviolet visible <microwave <infrared CX-ray ultraviolet < visible <infrared < microwave D. infrared microwave <ultraviolet visible <X-ray E microwave <infrared <ultraviolet < visible <X-ray 12. What is the energy of a photo of yellow light whose wavelength is 589 nm? A 3.38 x 10-19 B 3.38 x 10-10 C. 1.77 x 10J D. 5.09 x 10'J E 3.38 x 10-28 13. Which of the following statements regarding orbital diagrams is correct? A The 2p sublevel has two orbitals B. The 4p sublevel has four orbitals C. Four electrons can be placed in each orbital. D. All of the electrons in a given orbital must have the same spin. E Electrons will fill a given sublevel in a way that gives the maximum number of unpaired electrons 14. Write the electron configuration for the element chlorine A. 1522p B. 157252p 3s24p C. 15-232p 3s 3p D. 15-23-2p 3s 3p E. 132-2p 35-4p 15. The following orbital diagram corresponds to the element lllllllllllf 1s 2s 2p 3s 3p A Br BCI СР DS E. Si 16. Elements that have only one electron in the highest-energy s sublevel in their ground state are called A alkali metals. B. alkaline earth metals. C. halogens D. noble gases E transition metals. 17. The element that has the abbreviated electron configuration [Ne]3s 3p is: A. AI BP C. Si D. CI Ε. Αr

answer all please

Answer 1

11. Order of wavelength

  microwave > infrared > visible > ultraviolet > x-ray

12.
- 34 12. E= ho Is h= 6.626x10 s C- 3x108 mis x=589 nm = 5897109 M E = 6.626 X 10 x 3 x 108 589 x 10-9 = 6.626 x 1017x3 589 = 1.12 x 10? x1047x3 = 1.12 x 10-19 J x3 - 3.36 *10-19 ~ 3.38 X10-19 Ans

13. Electrons will the given subshell such a way there is maximum number of unpaired electrons.

Answer is (E).

14. Chlorine valence shell configuration is 3s2 3p5 , so answer is (C)

15. Total 17 electons are there so the element is chlorine, so answer is (B)

16. Answer is (A) alkali metals. (Have highest electron in d-subshell)

17. Total electrons are = 10+2+2 = 14 , the Element is silicon. answer is (C)

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