25/7/2007 electronic configuration n. the arrangement of electrons of its atom in the orbital 5.1-電子組態 25/7/2007 Aufbau principle n. state that electron will enter the possible orbitals in an order of ascending energy 5.1-構築原理 25/7/2007 Pauli Exclusion principle n. state that electron occupying the same orbital must have opposite spins 5.1-泡利不相容原理 25/7/2007 Hund's Rule n. state that electrons must occupy orbitals of same energy singly before pairing takes place 5.1- 25/7/2007 periodic table n. a tabular method arranged elements which have similar properties in an orderly way 5.3- 週期表 25/7/2007 period n. horizontal row of periodic table 5.3-週期 25/7/2007 group n. vertical column of periodic table 5.3-族 26/7/2007 screening effect n. repulsion exist between the outermost shell electrons and electrons in the inner shells of the atom 5.4-屏蔽效應 26/7/2007 atomic radius n. radius of the atom 5.4-原子半徑 26/7/2007 ionization enthalpy n. reflect the relative force of attraction between the nucleus and the electron being removed 5.4-電離焓 26/7/2007 transition element n. "commonly refers to any element in the d-block of the periodic table, including zinc, cadmium and mercury." 5.4- 26/7/2007 covalent radius n. half the internuclear distance between two covalently bonded atom in a molecule of atom 5.5-共價半徑 26/7/2007 metallic radius n. half the internuclear distance between two atoms in a metallic crystal 5.5-金屬半徑 26/7/2007 isomer n. a term that describe the compounds having the same molecular formula but different linkage or spatial arrangement of atoms. 24-同分異構體 27/7/2007 isomerism n. a phenomenon of occurrence of compounds with the same molecular formula but different spatial arrangement of atoms. 24-同分異構 27/7/2007 structural isomerism n. a type of isomers that the atoms are linked together in different ways. 24-結構異構 27/7/2007 stereoisomerism n. a type of isomers that the atoms are linked in the same way but have different spatial arrangements. 24-立體異構 27/7/2007 chain isomerism n. a type of structural isomers that have different carbon skeletons. 24-鏈異構 27/7/2007 position isomerism n. a type of structural isomers that have the same carbon skeletons and functional group but different in position of the functional group only. 24-位置異構 27/7/2007 metamerism n. a type of structural isomers that have the same functional group interrupting the carbon skeleton at different positions. 24-位變異構 27/7/2007 tautomerism n. a type of structural isomers that have different arrangement of atoms and are in dynamic equilibrium with each other. 24-互變異構 28/7/2007 functional group isomerism n. a type of structural isomers having the same molecular formula but containing different functional groups. 24-官能基異構 28/7/2007 cis-isomer n. an isomer which have two hydrogen atoms on the same side of the C=C double bond of the molecule. 24-順式異構體 28/7/2007 trans-isomer n. an isomer which have two hydrogen atoms on opposite sides of the C=C double bond of the molecule. 24-反式異構體 28/7/2007 geometrical isomerism n. a type of stereoisomerism that have different arrangement in their atoms in space due to restricted rotation about a covalent bond. 24-幾何異構 28/7/2007 enantiomerism n. a type of stereoisomerism whose molecules are not superimposable with its mirror image. 24-對眏異構 28/7/2007 chiral adj. decribes the molecule that is not superimposable with its mirror image. 24-手徵性的 28/7/2007 superimposable adj. the ability of matching an object to another object exactly. 24-可重疊的 29/7/2007 plane-polarized light n. a beam of light that consists an plane of oscillation of oscillating electric field in one direction only. 24-平面偏振光 29/7/2007 optical activity n. the ability of rotating the direction of plane of oscillation of a plane-polarized light 24-旋光性 29/7/2007 dextrorotatory adj. refers to the clockwise rotation of plane of oscillation of plane-polarized light. 24-右旋的 29/7/2007 levorotatory adj. refers to the anti-clockwise rotation of plane of oscillation of plane-polarized light. 24-左旋的