Question

In: Chemistry

1) If the electron drops down from the n=5 level to n=2, and then to the...

1) If the electron drops down from the n=5 level to n=2, and then to the ground state of hydrogen, what colors (wavelengths) of light will be emitted?

2) What color of light is this?

3) Photon color for n=2 to ground

4) What color of light is this?

Expert Solution

Apply Rydberg Formula

E = R*(1/nf^2 – 1/ni ^2)

R = -2.178*10^-18 J

Nf = final stage/level

Ni = initial stage/level

E = Energy per unit (i.e. J/photon)

E = (-2.178*10^-18)*(1/5^2 – 1/2^2)

E = 4.573*10^-19

For the wavelength:

WL = h c / E

h = Planck Constant = 6.626*10^-34 J s

c = speed of particle (i.e. light) = 3*10^8 m/s

WL = (6.626*10^-34)(3*10^8)/( 4.573*10^-19 )

WL = 4.34681*10^-7 m

WL (in nm) = 4.34681*10^-7 *109 = 434 nm (this is violet/purple)

2)

the color of light is violet/purple

3)

now for n= 2 to n = 1

Apply Rydberg Formula

E = R*(1/nf^2 – 1/ni ^2)

R = -2.178*10^-18 J

Nf = final stage/level

Ni = initial stage/level

E = Energy per unit (i.e. J/photon)

E = (-2.178*10^-18)*(1/2^2 – 1/1^2)

E = 1.6335*10^-18

For the wavelength:

WL = h c / E

h = Planck Constant = 6.626*10^-34 J s

c = speed of particle (i.e. light) = 3*10^8 m/s

WL = (6.626*10^-34)(3*10^8)/( 1.6335*10^-18)

WL = 1.21689*10^-7 m

WL (in nm) = 4.34681*10^-7 *109 = 121 nm this is ultaviolet lgith

no visible light to human eye

queen_honey_blossom answered 2 years ago

An electron (in a hydrogen atom) in the n=5 state drops to the n=2 state by...

An electron (in a hydrogen atom) in the n=5 state drops to the n=2 state by undergoing two successive downward jumps. What are all possible combinations of the resulting photon wavelengths?

An electron in the n = 5 level of an H atom emits a photon of...

An electron in the n = 5 level of an H atom emits a photon of wavelength 4052.28 nm. To what energy level does the electron move?

An electron in a Hydrogen atom originally at n=5 energy level absorbs a photon with a...

An electron in a Hydrogen atom originally at n=5 energy level absorbs a photon with a frequency of 6.54×10^13 and then proceeds to emit another photon with a frequency of 2.98×10^14. To what energy level does the electron move?

6.)How much energy is required to excite a hydrogen atom's electron from n=2 to n=5? Enter...

6.)How much energy is required to excite a hydrogen atom's electron from n=2 to n=5? Enter your answer with 2 significant figures. Note: Your answer is assumed to be reduced to the highest power possible. 6 b.) Calculate the wavelength of light that is required to excite a hydrogen atom's electron from n=2 to n=5? Enter your answer in meters with 2 significant figures. Note: Your answer is assumed to be reduced to the highest power possible.

1.)Calculate the wavelength of light produced if an electron moves from n=2 state to n=1 state...

1.)Calculate the wavelength of light produced if an electron moves from n=2 state to n=1 state of an electron in a hydrogen atom. Express your answer to three significant figures and include the appropriate units. 2.)Predict if this wavelength higher or lower than those produced if an electron moves from n=6 state to n=1 state. a.) higher b.) lower

Calculate the energy change when an electron falls from the n =6 energy level to the...

Calculate the energy change when an electron falls from the n =6 energy level to the n = 1 energy level in a hydrogen atom. ΔE=−2.178×10−18 J ( 1/n^2 final)- (1/n^2 initial) How many orbitals are described by each of the below combinations of quantum numbers? n = 3, ℓ =2 n = 4, ℓ = 2, mℓ = 2 Choose one: A. orbitals that randomly fill, but that are always identical. B. orbitals of the same shape. C. orbitals...

Identify all allowable combinations of quantum numbers for an electron. n=3,n=3, ?=2,?=2, m?=2,m?=2, ms=−12ms=−12 n=5,n=5, ?=4,?=4,...

Identify all allowable combinations of quantum numbers for an electron. n=3,n=3, ?=2,?=2, m?=2,m?=2, ms=−12ms=−12 n=5,n=5, ?=4,?=4, m?=−1,m?=−1, ms=−12ms=−12 n=3,n=3, ?=−2,?=−2, m?=2,m?=2, ms=+12ms=+12 n=6,n=6, ?=6,?=6, m?=1,m?=1, ms=+12ms=+12 n=4,n=4, ?=3,?=3, m?=4,m?=4, ms=+12ms=+12 n=2,n=2, ?=0,?=0, m?=0,m?=0, ms=−1

A punter drops a ball from rest vertically 1 meter down onto his foot. The ball...

A punter drops a ball from rest vertically 1 meter down onto his foot. The ball leaves the foot with a speed of 27 m/s at an angle 52° above the horizontal. What is the impulse delivered by the foot? (Use 0.41 kg for the mass of the ball. Assume the punter faces the +x-direction and that the +y-direction is upward. Enter the impulse in kg · m/s and the direction in degrees counterclockwise from the +x-axis.)

Which codes add 1 to integer n? 1) n=n+1; 2) n++; 3)++n; 4) n+=1; 5) n=--n+2

The electron in a hydrogen atom starts in the n = 7 level. Determine all the...

The electron in a hydrogen atom starts in the n = 7 level. Determine all the possible wavelengths that could be emitted if the electron ends in the first excited state.