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20 Nov 2019
General chem, light
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Which have the largest number of unpaired electrons in p orbitals in their ground-state electron configurations? Which groups of elements, indicated by letter on the periodic table, have two unpaired p electrons in their valence shell? What is a quantum of light called? Which of the following elements would you predict to have an anomalous electron configuration? Which line in the Balmer series spectrum for excited hydrogen atoms is due to the n = 4 to n = 2 transition? What is the wavelength (in meters) of a proton (mass = 1.673 Times 10-24 g) that has been accelerated to 23% of the speed of light? In what region of the electromagnetic spectrum is this wavelength? Sodium atoms emit light with a wavelength of 330 11m when an electron moves from a 4p orbital to a 3s orbital. What is the energy difference between the orbitals in kilojoules per mole? The laser light used in Blu-ray players has lambda = 405 nm. In what region of the electromagnetic spectrum does this light appear? What is the energy of this light in kilojoules per mole?
General chem, light
1)
2)
3)
4)
5)
6)
7)
8)
Which have the largest number of unpaired electrons in p orbitals in their ground-state electron configurations? Which groups of elements, indicated by letter on the periodic table, have two unpaired p electrons in their valence shell? What is a quantum of light called? Which of the following elements would you predict to have an anomalous electron configuration? Which line in the Balmer series spectrum for excited hydrogen atoms is due to the n = 4 to n = 2 transition? What is the wavelength (in meters) of a proton (mass = 1.673 Times 10-24 g) that has been accelerated to 23% of the speed of light? In what region of the electromagnetic spectrum is this wavelength? Sodium atoms emit light with a wavelength of 330 11m when an electron moves from a 4p orbital to a 3s orbital. What is the energy difference between the orbitals in kilojoules per mole? The laser light used in Blu-ray players has lambda = 405 nm. In what region of the electromagnetic spectrum does this light appear? What is the energy of this light in kilojoules per mole?
Elin HesselLv2
16 Mar 2019