Quantum Number Worksheet #1



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Electrons in Atoms Test Review

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E= energy in J λ= wavelength in m (λ is the Greek letter lambda) f = frequency in Hz or s-1

A. Solve the following problems using the correct number of significant figures:

1. What is the wavelength of a wave having a frequency of 3.44X1015 Hz?

2. What is the energy of one photon of violet light?

3. A radio station broadcasts with a frequency of 9.47X107 Hz. What is the ( of the broadcast?

|Visible Portion of Electromagnetic Spectrum |

|Representative |Wavelength |Color |

|Wavelength (nm) |Region (nm) |  |

|410 |400-425 |Violet |

|470 |425-480 |Blue |

|490 |480-500 |Blue-Green |

|520 |500-560 |Green |

|565 |560-580 |Yellow-Green |

|580 |580-585 |Yellow |

|600 |585-650 |Orange |

|650 |650-700 |Red |

B. Determine which has the following:

1. Higher λ: orange or green light

2. Lower f: blue or red light

3. Greater E: IR or UV

4. Greater E: Gamma or X-Rays

5. Shorter λ: FM or AM Radio

6. Higher f: microwave or UV

7. Lower E: yellow or violet light

8. Lower f: IR or red light

9. Longer λ: TV Waves or blue light

|Electromagnetic Spectrum | |

|Wavelength |Type of Electromagnetic Radiation |

|5.55 m to 187 m OR (5.55X109 nm to 1.87X1011 nm) |AM Radio |

|0.187 m to 5.55 m OR (1.87X108 nm to 5.55X109 nm) |TV & FM Radio Waves |

|10 mm to 187 mm OR (1X107 nm to 1.87X108 nm) |Microwave |

|750 nm to 1,000,000 nm |Infrared (IR) |

|400 nm to 700 nm |Visible spectrum |

|10 nm to 400 nm |Ultraviolet (UV) |

|Less than 10 nm |X rays |

|Less than 0.001 nm |Gamma (γ) rays |

C. Write the electron configurations for the following elements using orbital notation:

1. Sulfur

2. Silver

3. Tungsten

D. Write the complete electron configuration for the following elements:

1. Krypton

2. Californium

3. Tin

E. Write the noble gas or abbreviated electron configuration for the following elements:

1. Chlorine

2. Nickel

3. Ruthenium

4. Iridium

5. Berkelium

K. Complete the table and write the nuclear symbol for each ion:

|Atomic Number |Mass Number |# protons |#neutrons |#electrons |Nuclear Symbol |

| | |38 |53 |36 | |

| | |16 |19 |18 | |

| | |53 |75 |54 | |

L. Complete the following mole problems using dimensional analysis:

1. How many ions of chlorine are in 6.0 moles of magnesium chloride, MgCl2?

2. How many lithium ions would 13.0 moles of lithium oxide, Li2O, contain?

3. In a 200. gram sample of calcium oxide, CaO, how many ions are present?

4. In a 325 gram sample of potassium sulfide, K2S, how many ions are present?

5. In a 554 gram sample of aluminum oxide, Al2O3, how many ions are present?

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