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TEPperiodictable
| Question | Answer |
|---|---|
| Dmitri Mendeleev | creator of the modern day periodic table. |
| Lothar Myer | Created a periodic table at about the same time as Mendeleev. His work was not published in time so he does not receive credit. |
| Periodic law | the physical and chemical properties of the elements are periodic functions of their atomic numbers. |
| Periodic table | an arrangement of the elements in order of their atomic numbers so that elements with similar properties fall in the same column or group. |
| Noble Gas | a group 18 element (helium, neon, argon, krypton, xenon, and radon) |
| Lanthanides | the 14 elements with atomic numbers from 58 to 71 |
| Actinides | the 14 elements with atomic numbers from 90 through 103 |
| Periodicity | a repeating pattern |
| Period | a horizontal row of elements in the periodic table. |
| Family | a vertical column of the periodic table. |
| Series | A group of objects related by linearly varying successive differences in form or configuration |
| Group | a vertical column of the periodic table. |
| s-block elements | includes Groups 1 and 2. chemically reactive metals |
| p-block elements | includes Groups 13 through 18. |
| d-block metals | includes Groups 3 through 12 |
| f-block metals | includes the Lanthanides and the Actinides |
| Alkali metals | elements of group 1 of the periodic table |
| Alkaline Earth metals | elements of Group 2 of the periodic table |
| metal | an element that is a good conductor of heat and electricity |
| transition metals | one of the d-block elements that is a metal, with specific metallic properties |
| main-group or representative elements | an element in the s or p-block |
| halogens | elements in group 17(fluorine, chlorine, bromine, iodine, astatine) |
| atomic radius | one-half the distance between the nuclei of identical atoms that are bonded together |
| bonding radius | the distance between two atoms that have been bonded together. |
| ionization energy | the energy required to remove one electron from a neutral atom of an element |
| electron affinity | the energy change that occurs when an electron is acquired by a neutral atom. |
| valance electron | an electron that is able to be lost gained or shared in the formation of chemical compounds |
| cation | a positive ion |
| anion | a negative ion |
| ion | an atom or group of bonded atoms that has a positive or negative charge |
| atomic mass unit | a unit of mass that is exactly 1/12 the mass of a carbon -12 atom or 1.660 x 10-27 |
| nonmetal | an element that is a poor conductor of heat and electricity |
| isotope | atoms of the same element that have different masses |
| shielding effect | Electrons in filled sets of s , p orbitals between the nucleus and outer shell electrons shield the outer shell electrons somewhat from the effect of protons in the nucleus; also called screening effect |
Created by:
Tessa Elise
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