Chapter 06 vocab.txt

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Gesyca_is_joy
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269449
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Chapter 06 vocab.txt
Updated:
2014-04-20 22:28:22
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CHEM 1405
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Chemistry
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Electronic Structure and Chemical Periodicity
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  1. Periodic law
    When elements are arranged in order of increasing atomic number, elements with similar chemical behavior occur at periodic intervals
  2. Periodic table
    A tabular arrangement of the elements in order of increasing atomic number such that elements having similar chemical behavior are grouped in vertical columns
  3. Period
    A horizontal row of elements in the periodic table
  4. Group
    A vertical column of elements in the periodic table
  5. Alkali metal
    A general name for any element in the group 1A of the periodic table, excluding hydrogen. Alkaline metals are soft shiny metals that readily react with water.
  6. Alkaline earth metal
    General name for any element in group to a of the periodic table. Alkaline Earth metals are soft shiny medals only moderately reactive with water
  7. Halogen
    A general name for any element in group 17 of the periodic table. Halogens are very reactive colored substances that are gases at room temperature or become such at temperatures slightly above room temperature
  8. Noble gases
    A general name for any element in group 18 of the periodic table. Gases are unreactive gases that undergo few if any chemical reactions
  9. Quantized property
    A property that can only have certain values, that is, not all values are allowed
  10. Electron shell
    A region of space about a nucleus that contains electrons that have approximately the same energy and that spend most of their time approximately the same distance from the nucleus
  11. Electron sub shell
    A region of space within an electron shell that contains electrons that have the same energy
  12. Electron orbital
    A region of space within an electron subshell where an electron with a specific energy is most likely to be found
  13. Electron spin
    A property of an electron associated with the concept that an electron is spinning on its own axis
  14. Aufbau principle
    States that electrons normally occupy electron subshells in an atom in order of increasing subshell energy
  15. Aufbau diagram
    A listing of electron subshells in the order in which electrons occupy them
  16. Condensed electron configuration
    An electron configuration in which the chemical symbol of the nearest noble gas element of a lower atomic number is used to represent the electrons in the configuration up to that of the noble gas, and the remaining additional electrons are then appended to the chemical symbol of the noble gas
  17. Core electrons
    Inner shell electrons of an Atom that are not normally involved in determining the chemical properties of the Atom
  18. Outer electrons
    The electrons in a condensed electron configuration given after the noble gas core electrons. Among the outer electrons are those that determine the chemical properties of the atom
  19. Hund's rule
    When electrons are placed in a set of orbitals of equal energy the order of feeling for the orbitals is such that each orbital of the sub shell receives an electron with the same spin before any orbital receives a second electron
  20. Electron orbital diagram
    A diagram that shows how many electrons and Adam has in each of its occupied electron orbitals
  21. Paired electrons
    Two electrons of opposite spin present in the same orbital
  22. Unpaired electrons
    A single electron in an orbital
  23. Paramagnetic atom
    And Atom that has an electron arrangement containing one or more unpaired electrons
  24. Diamagnetic atom
    An atom that has an electronic arrangement in which all electrons are paired
  25. Distinguishing electron
    The last electron added to the elements electron configuration
  26. Metal
    An element that has the characteristic properties of luster, thermal conductivity, electrical conductivity, and malleability
  27. Nonmetal
    An element characterized by the absence of the properties of luster, thermoconductivity, electrical conductivity, and malleability
  28. Noble gas
    An element located in the far right column of the periodic table
  29. Representative element
    Element located in the S area or first five columns of the P area of the periodic table
  30. Transition element
    An element located in the D area of the periodic table
  31. Inner transition elements
    An element located in the F area of the periodic table
  32. Chemical periodicity
    The variation in properties of elements as a function of their positions in the periodic table
  33. Metalloid
    An element with properties into mediate between those of metals and nonmetals.
  34. Semiconductor
    An element that does not conduct electrical current at room temperature but does so at higher temperatures

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