# chemistry - Chapter 7 Atomic Structure Page 1 Chapter 7...

This preview shows pages 1–4. Sign up to view the full content.

Chapter 7 — Atomic Structure Page 1 Chapter 7 ATOMIC STRUCTURE USEFUL CONSTANTS: 1 nm = 1.0 x 10 -9 m velocity of light = 3.0 x 10 8 m/s h = Planck's constant = 6.6261 x 10 -34 J • s 7-1. If the frequency is observed to be 1.00 x 10 12 Hz for a microwave signal, what is the wavelength of this radiation in centimeters? (1 Hz = 1 cycle per second) (a) 3.00 x 10 -4 cm (b) 3.00 x 10 -2 cm (c) 3.34 cm (d) 3340 cm 7-2. If red light has a frequency of 4.28 x 10 14 Hz, what is the wavelength of this light? (a) 0.650 nm (b) 2.10 nm (c) 65.0 nm (d) 700 nm 7-3. A local radio station has a frequency of 98.6 megahertz (MHz). What is the wavelength of this station in centimeters? (1 MHz = 1.00 x 10 6 cycles per second) (a) 304 cm (b) 37.1 cm (c) 0.329 cm (d) 0.00289 cm 7-4. Which of the following produces radiation having the highest frequency? (a) microwave oven (b) AM radio (c) radar (d) FM radio 7-5. Which of the following types of radiation has the longest wavelength? (a) gamma rays (b) visible (c) ultraviolet (d) radar 7-6. Which of the following has the longest wavelength? (a) blue light (b) red light (c) yellow light (d) green light Revised: November 1997

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Chapter 7 — Atomic Structure Page 2 7-7. Which of the following types of radiation has the highest energy? (a) gamma rays (b) visible (c) ultraviolet (d) radar 7-8. What is the frequency of green light having a wavelength of 521 nanometers? (a) 5.21 x 10 7 Hz (b) 5.75 x 10 7 Hz (c) 5.75 x 10 11 Hz (d) 5.75 x 10 14 Hz 7-9. What is the frequency in megahertz of a radio station that broadcasts at a wavelength of 325 centimeters? (1 MHz = 1.00 x 10 6 cycles per second) (a) 22.1 MHz (b) 67.1 MHz (c) 92.2 MHz (d) 108 MHz 7-10. What is the frequency in megahertz of a radio set that is broadcasting at 99.9 meters? (a) 3.00 MHz (b) 15.7 MHz (c) 33.3 MHz (d) 299 MHz 7-11. In the Rutherford scattering experiment, Rutherford bombarded a thin piece of gold foil with a beam of (a) electrons (b) neutrons (c) protons (d) alpha rays 7-12. In the Rutherford scattering experiment, what did Rutherford observe to happen to the beam of particles that bombarded the thin piece of gold foil? (a) None of the particles were deflected. (b) Only a few particles were deflected, but the deflection was large. (c) Most of the particles were slightly deflected. (d) Most of the particles were greatly deflected. 7-13. Based on these observations from the scattering experiment, what did Rutherford conclude? (a) The positive part of the atoms is moving very rapidly. (b) The positive charge is distributed throughout the atom. (c) The positive part of the atom is relatively small and heavy. (d) The negative part of the atom is relatively small and heavy. Revised: November 1997
Chapter 7 — Atomic Structure Page 3 7-14. According to the experiments concerned with the photoelectric effect, what was the result of increasing the intensity of the light striking the metal surface?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern