List the seven regions of the electromagnetic spectrum in order from the longest

Question

List the seven regions of the electromagnetic spectrum in order from the longest to the shortest wavelength. List the seven colors of the rainbow in order starting with red. What is the frequency of electromagnetic radiation with a wavelength of 2.75 Times 10^-14 m? What is the energy (in J/photon) of a photon with a frequency of 3.7 Times 10^20 Hz? What is the energy (in kJ/mol) of a electromagnetic radiation with a wavelength of 575.4 nm? How much energy does an electron have in the third energy level of a hydrogen atom? Report your answer in J/atom and kJ/mol. What is the wavelength of the light emitted by a hydrogen atom when an electron falls from the energy level to the fourth energy level? What are the possible values for the four quantum numbers? Draw a 1s, a 2p and a 3d orbital. Describe the shape of a 4f orbital. Which has a larger radius, a 1 s orbital or a 2s orbital? What makes a diamagnetic substance diamagnetic? Paramagnetic? Ferromagnetic?

Explanation / Answer

(1)

Radiowaves

microwaves

Infrared waves

visible spectrum

Ultra violet

X-rays and

Gamma rays

(2) The seven colours are

Red

Orange

Yellow

Green

Blue

Indigo and

Violet

(3)

Wavelength = 2.75 x 10-14 m

Frequency = velocity of light / wavelength

= (3 x10-8 m/s ) / 2.75 x 10-14 m

= 1.09 x 106 s-1 or 1.09 x 106 Hz

(4)

E = hv

Here v is frequency, v = 3.7 x 1020 Hz

E = 6.626 x 10-34 J s x 3.7 x 1020 Hz = 24.5162 x 10-14 J

For remaining answers please post another question

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