Flashcards
Arranging electron, atomic mass and isotopes
Cards in this deck (17)
- 1Mass numbers are not whole numbers as...They are a more accurate way of showing a variety of mass numbers
- 2IsotopeThe different form of an element with different numbers of neutrons
- 3Carbon-12 and carbon-13 occur98.9% and 1.1%
- 4Carbon-14 breaks down through radioactive decay to formNitrogen an electron and electromagnetic radiation
- 5Relative atomic massThe average mass of isotopes of an element according to their rarity
- 6Periodic table shows relative atomic mass to...2 decimal places
- 7Neil's BohrConcluded that electrons orbit the nucleus in certain distances
- 8Electron shellsAre orbits in which electrons are located around a nucleus according to their energy
- 9Bohr ModelA model proposed by Neil's Bohr in which electrons orbit in energy levels
- 10Electron configurationArrangement of electrons around around an atom
- 11In the first 20 elements..They 3rd she'll can accommodate 8 whilst higher ones accommodate 18
- 12Maximum number of electrons a shell can hold is2nsquared n=number of shells from nucleus
- 13The closer the electrons are...The more stable
- 14She'll diagramsShow electron configuration by shells in circles and electrons in pairs
- 15Valence ShellThe outermost unoccupied shell
- 16Emission SpectrumPattern of colours seen an element is placed under a spectroscope
- 17Why does emission spectrum occur.When element is placed under flame electrons jump up a shell and every jump releases light in different wavelengths.
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- Science (Chemistry) Flashcards on Arranging electron, atomic mass and isotopes, created by ioannis_lion on 06/04/2014.
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