Evaluation

Here is a test to see what  you know about Dalton's atomic theory with this:  Interactive video💥

Here are some problems to practice:

1.  The hydrogen atom absorbs energy so that the electrons are excited to the energy level n = 7. The electrons then undergo these transitions: 1) n = 7 to n = 1; 2) n = 7 to n = 2; 3) n = 2 to n = 1. Which of these transitions will produce a photon with:

a. The lowest energy

b. The highest frequency

c. The shortest wavelength.

2. Chlorine found in nature is 75.78% of 35Cl (atomic mass of 34,969 amu ) and 24.22% of 37Cl (atomic mass of 36,966 amu). Calculate the average atomic mass of chlorine

3. Calculate the frequency of radiation of the following wavelength:

- 8973 Å