Name_______________ Date________________ Period______________ A#_______ 1. How many protons, electrons, and neutrons are in an atom of bromine-80? Write the symbol notation for this isotope. 3. What is the name of the element that has atoms that contain 17 protons? 5. Write the electron configuration for copper. 2. Naturally occurring copper consists of 69.17% copper-63, which has an mass of 62.92 amu, and 30.83% copper-65, which has mass of 64.92amu. Find the average atomic mass. 4. What is the frequency of a radio wave with an energy of 1.55 x 10 -24 J? 6.Describe and draw a picture of the electron cloud model of the atom in as much detail as possible. How many electrons are in each orbital? 1st 2nd 3rd 4th How many valence electrons? How many core electrons? 7. Compare and contrast the 3 types of subatomic particles in terms of location in the atom, mass, and relative charge. 8. Draw the orbital diagram for sulfur. 9. What is the frequency of a wave whose wavelength is 5.3 x 10 -6 m?