Problem 1: Consider the Lyman series for atomic transitions in hydrogen.
Part (a) Calculate the wavelength the first line in the Lyman series, in nanometers.
Numeric : A numeric value is expected and not an expression.
λ = __________________________________________
Part (b) What type of electromagnetic radiation is it?
MultipleChoice :
1) Microwaves
2) Gamma radiation
3) Infrared
4) Radio waves
5) Ultraviolet Radiation
Problem 2: Suppose a hydrogen atom has its electron in the n = 4 state.
Randomized Variablesn = 4
What is the minimum amount of energy, in electron volts, needed to ionize the atom?
Numeric : A numeric value is expected and not an expression.
En = __________________________________________
Problem 3: A hydrogen atom in an excited state can be ionized with less energy than when it is in its ground state.
Randomized VariablesE = 0.87 eV
What is the minimum energy level n of an electron in a a hydrogen atom if 0.87 eV of energy can ionize it?
Numeric : A numeric value is expected and not an expression.
n = __________________________________________
Problem 4: In Bohr's model of a Hyodrogen atom, electrons move in orbits labeled by the quantum number n.
Randomized Variablesn = 4
Find the radius, in meters, of the orbit of an electron around a Hydrogen atom in the n = 4 state according to Bohr's theory.
Numeric : A numeric value is expected and not an expression.
rn = __________________________________________
Problem 5: A beryllium ion with a single electron (denoted Be3+) is in an excited state with a radius that is the same as that of the ground state of hydrogen.
Part (a) What is the energy level n for this Be3+ ion?
Numeric : A numeric value is expected and not an expression.
n = __________________________________________
Part (b) How much energy, in electronvolts, is needed to ionize the electron from this excited state?
Numeric : A numeric value is expected and not an expression.
En = __________________________________________
