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Electron Arrangement

Electron Arrangement. Review. Question 1. For a neutral atom, the atomic number gives you the number of ____________ and ____________. protons. electrons. Question 2. Argon-40 has _____ protons. 18. Argon- 40 40 represents the mass number Mass number = protons + neutrons. Question 3.

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Electron Arrangement

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  1. Electron Arrangement Review

  2. Question 1 For a neutral atom, the atomic number gives you the number of ____________ and ____________. protons electrons

  3. Question 2 Argon-40 has _____ protons. 18 Argon-4040 represents themass number Mass number = protons + neutrons

  4. Question 3 What is the value of c, the speed of light? 3.00 x 108 m/s

  5. Question 4 What does the λ, stand for? Wavelength

  6. Question 5 Solve this formula for frequency, v. c = λv v = c Solve for wavelength, λ

  7. Question 6 A certain photon of light has a wavelength of 422 nm. What is the frequency of the light? Convert 422 nm to meters first. 1 m = 1 x 109 nm Sig. Fig!!!! 7.11 x 1014 Hz

  8. Question 7 In the equation E=hv, what does h stand for? Planck’s Constant 6.6262 x 10- 34 J s J = Joules (unit for Energy)

  9. Question 8 What is the energy of a quantum of light that has a frequency of 7.11 x 1014 Hz? 4.71 x 10-19 Joules

  10. Question 9 Solve the energy formula, E=hv, for frequency. v = E h

  11. Question 10 A certain red light has a wavelength of 680 nm. What is the frequency of the light? Convert 680 nm to m first. 1 m = 1 x 109 nm 4.4 x 1014 Hz

  12. Question 11 What is the wavelength of the quantum of light that has a frequency of 7.39 x 1014 Hz? 4.06 x 10-7 m

  13. Question 12 A certain blue light has a frequency of 6.91 x 1014 Hz. What is the wavelength of the light? 4.34 x 10-7 m

  14. Question 13 What is the energy of a quantum of light that has a wavelength of 4.34 x 10-7 m? Frequency = 6.91 x 1014 Hz Energy = 4.58 x 10-19 m

  15. Question 14 The energy for a quantum of light is 2.84 x 10-19 J. What is the wavelength of this light? Frequency = 4.29 x 1014 Hz Wavelength = 6.99 x 10-7 m

  16. Question 15 What is the unit of measurement for: • Frequency • Wavelength • Energy Hertz (Hz), Meters (m), Joules (J)

  17. Where are the valence electrons located in an atom? AT THE TOP OF EACH GROUP

  18. Which of the following particles has a positive one (+1) charge? Alpha Electron Neutron Proton

  19. CATION ANION “ OXIDATION NUMBERS • An atom that gains one or more electrons will have a ____________________ charge. • An atom that loses one or more electrons will have a ____________________ charge. • An atom that gains or loses one or more electrons is called an ____________. • A positive ion is called a ______________ and a negative ion is called an _______________. NEGATIVE POSITIVE ION

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