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ChemistryReviewCh.6
How are elements arranged in the modern periodic table? | in order of increasing atomic # |
How did Mendeleev arrange his periodic table? | in order of increasing atomic mass |
What is the charge of a cation and an anion? | cation (+) lose electrons anion (-) gains electrons |
What subatomic particle plays the greatest part in determining the properties of the element? | electrons |
How do electronegativity, 1st ionization energy, and atomic radius trend on the periodic table? | atomic radius decreases as you go down, electroneg. and ionization increases as you go up; electroneg. and 1st ionization increase as you go to the right, atomic radius decreases as you go to the left |
What do noble gas electron configuration have in common? | in the highest occupied energy level the s and p sublevels are completely filled |
What is a group and what is a period on the periodic table and what do they tell us? | group-moves down the periodic table;elements in the same group have similar properties period: across the periodic table; elements in the same period have similar energy |
What information is included in a periodic table element block? | Element name and symbol, atomic number, and atomic mass |
What are the representative elements and what best describes them? | Group A elements;they display a wide range of properties including metals, nonmetals, metalloids, and all 3 states of matter:solid, liquid, and gas |
What is an alkali metal? | group 1A |
What is an alkaline earth metal? | Group 2A |
What is a transition metal? | All Group B elements |
What is a halogen? | Group 7A |
What is a noble gas? | Group 8A |
What is a metal? | element to left of stairstep on periodic table |
What is a nonmetal? | elements to the right of stairstep on periodic table |
What is a metalloid? | elements on periodic table |
Write an electron configuration of an element. | 1s(2)2s(2)2p(6)3s(2)3p(6)3d(10)4s(2)4p(3) |
What is electronegativity? | ability of an atom to attract electrons from another atom |
What is ionization energy? | energy required to remove an electron from an atom |
What is an atomic radius? | half the distance between nuclei of 2 atoms when they are joined |
What is periodic law? | a repetition of properties occur when elements are arranged by increasing atomic number |
What is atomic mass? | basis of Mendeleev's arrangement of the periodic table |