Flashcards
Atomic Theory
Cards in this deck (9)
- 1What is the 1st ionization energy?is the minimum energy required to remove one mole of electron from, one mole of gaseous atoms to form one mole of univalent cations in the gaseous state.
- 21st ionization energy. moving down the group?Energy decreases.
the increasing distance of outer electron and the nucleus
attraction of force between electron and nucleus decreases. - 31st ionization energy. moving across the period?ionization energy is increasing.
due to increasing nuclear charge (protons) and decreasing AR. More energy is required remove the electron. - 4Successive ionization energy. large increasea larger increase in successive ionization energy of an atom, when there is a change in energy level. When the electron is removed from a lower energy level, more energy is required because of the distance between the electron and the nucleus, as the attraction of force is very strong
- 5Successive ionization energy. small increasea smaller increase in successive ionization energy in an atom, when the electron is removed from a different sub-level. ex. change of p4 to p3. As paired electrons are easier removed than unpaired because they repel each other
- 6emission spectrumatoms move from higher to lower energy levels.
- 7line emission spectrumshows only certain frequencies of light, produced by excited atoms and ions, which fall back to lower levels. (high voltage applied to gas)
- 8line absorption spectruma continuous spectrum, except certain colors, which are absorbed, as atoms are excited and move to a higher level.
- 9continues spectrumshows an unbroken sequence of frequencies, such as visible light spectrum. (sunlight passes through spectrum)
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- 11. Klasse Chemie Flashcards on Atomic Theory, created by sofie von kaiser on 19/11/2016.
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- sofie von kaiser
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