1.Who formulated the "Uncertainty Principle"?
A Erwin Schrodinger
B. James Maxwell
C. Louise de Broglie
D. Werner Heisenberg

2. Where are the electrons usually found according to the atomic theory?
A. In the atomic nucleus.
B. Outside the nucleus, most of an atoms volume is the electron cloud.
C. Outside the nucleus, yet near it because they are attracted to protons.
D. Anywhere they want to be-no particular location is more likely than any other.

3. What is the region around the atomic nucleus where the electron is mostly found?
A. Frequency
B. Energy Level
C. Atomic Orbital
D. Atomic Emission Spectrum

4. Which shows the correct order in the following atomic orbitals?
A. forbital, d orbital, p orbital, s orbital
B. p orbital, f orbital, s orbital, d orbital
C. s orbital, d orbital, forbital, p orbital
D. s orbital, p orbital, d orbital forbital

5. Which of the following is the lowest value of that the principal quantum number may have?
A. O
B. 1
C. 2
D. 3

6. How many electrons could be held in the second shell of an atom if the spin quantum number m. could have three values instead of just two?
A. 12
B. 15
C.20
D.24

​