Chemistry
Chemistry, 24.08.2019 01:30, jeepjose58

Hydrogen is the only atom that does not have electrons in the 1st energy level/shell.

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Chemistry, 05.07.2019 10:50, idk7193
An ionic bond is a. formed when electrons shared between two or more electrons is unequally shared. b. a chemical bond where two atoms share the electrons in the outer shell. c. is a chemical bond formed by the transfer of one or more electrons from the outermost energy level (the valance shell) of one atom to that of the other. d. is formed when the a hydrogen bond already covalently linked to one electronegative atom binds with another electron hungry atom to form a bridge.
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Physics, 22.07.2019 08:30, Karamatullah
As mentioned in this week’s notes on page 4, the electrons of an atom can occupy different energy shells within the atom (similar to how the planets all occupy different orbits around the sun). electrons prefer to be in the lowest energy shell possible (the ground state); however, they can gain energy and jump to a higher shell by absorbing light or being excited by an electric current. in accordance with the conservation of energy, if an electron drops from a higher energy level to a lower one, this must emit a photon (particle of light) with energy equal to the energy difference of the shells. a balmer series transition is any transition of an electron from some higher energy shell down to the second lowest energy shell (n=2) in hydrogen. looking at image (b) above, what is the wavelength of a photon emitted during the balmer transition from the n=3 shell in hydrogen? (remember nm is short for a nanometer, for example 656 nm = 656 x 10-9 meters) a) 656e-9 meters b) 486e-9 meters c) 434e-9 meters d) 410e-9 meters
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Physics, 04.08.2019 00:00, KpopSushi
As mentioned in this week’s notes on page 4, the electrons of an atom can occupy different energy shells within the atom (similar to how the planets all occupy different orbits around the sun). electrons prefer to be in the lowest energy shell possible (the ground state); however, they can gain energy and jump to a higher shell by absorbing light or being excited by an electric current. in accordance with the conservation of energy, if an electron drops from a higher energy level to a lower one, this must emit a photon (particle of light) with energy equal to the energy difference of the shells. a balmer series transition is any transition of an electron from some higher energy shell down to the second lowest energy shell (n=2) in hydrogen. looking at image (b) above, what is the wavelength of a photon emitted during the balmer transition from the n=3 shell in hydrogen? (remember nm is short for a nanometer, for example 656 nm = 656 x 10-9 meters) 656e-9 meters 486e-9 meters 434e-9 meters 410e-9 meters
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Chemistry, 31.08.2019 01:00, babbity2009
The diagram shows an electron shell model of a sodium atom how would the model change as the atom forms bonds? 639 00 the third shell would have eight electrons after the atom gains seven electrons to fill the outermost shell. the third shell would be empty so that the eight electrons in the second level would be outermost after the atom loses one electron the first and third shells would be empty so that the atom would have eight electrons in its remaining shell after the atom loses three electrons. the first shell would have two electrons and the second shell would have six electrons after the atom loses three electrons
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