1. Chapter 4-5 Review

2. How many protons, neutrons, and electrons?
Mass number?
Atomic number?

3. How many protons, neutrons and electrons?
Mass number?
Atomic number?

4. Calculate the atomic mass of silicon
Calculate the atomic mass of silicon. The three silicon isotopes have atomic masses and relative abundance of amu ( %), amu (4.6832%) and amu (3.0872%)

5. Argon has 3 naturally occurring isotopes: argon-36, argon-38, and argon 40. Based on argon’s reported atomic mass, which isotope do you think is the most abundant in nature? Explain.

6. Draw the Bohr structure of Silicon

7. How many electrons can n=3 hold?

8. What is the electron configuration of:
Potassium
Iodine
Magnesium

9. Do all colors of light have the same energy
Do all colors of light have the same energy? If no, which colors have the highest energy and the least energy respectively?

10. What is the relationship between:
Wavelength and frequency?
Wavelength and energy?
Frequency and energy?

11. How is an atomic emission spectrum produced?

12. A photon has an energy of 3. 37 x 10-19 J
A photon has an energy of 3.37 x J. What is the wavelength of this photon? What color is emitted?

13. A photon of light has a wavelength of 200 nm. What is its frequency?