- WFNM broadcasts at a frequency of 89.1 MHz.
- calculate the wavelength of this frequency
- calculate the energy of one photon of this frequency
- determine how many 100 W light bulbs could be operated for one second with the energy from one mole of photons of this frequency. [A 100 W light bulb requires 100 J per second.]
- For an electron confined to a line:
- Derive the equation for the energy starting from the DeBroglie relationship.
- Show the wave function and the location probability for both the ground state and the first excited state.
- Calculate the potential energy of one proton and two electrons positioned at the corners of an equilateral (equal sides) triangle with sides of 1 Å.
Is this set of particles stable? Explain.
- In which orbital--1s, 2s, 2px, 2py, or 3s
- would an electron be most distant from the nucleus?
- would an electron have the lowest energy?
- would an electron be found along the x, but not the y axis?
- If the quantum numbers for atoms were given by the rules:
n = 1, 2, 3, ...
l = 0, ... n-1
m = 0, .... l
- How many d orbitals would there be in n=3?
- How many elements would be p-fillers in a given period?
- How many s-orbitals have n=3?
- How many orbitals have n=3 and l = 1?
- How many electrons can have n=3 and m=0 ?
- Which orbital has the higher energy--3s or 3p?
- In the diagram below:
- label the orbitals and enter the electrons for magnesium on the left-side.
- using the diagram, calculate the ionization energy for a mole of magnesium atoms.
- on the right side of the diagram, enter the orbitals (and populate them) for phosphorus.
- is the ionization energy of phosphorus higher or lower than that of magnesium?