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Chapt. 5-1
Chapt. 5
Question | Answer |
---|---|
Method for determining standard mass of atoms Initiated search for relationships in properties | Stanislao Cannizzaro |
Mass/known chem. props. Arranged by properties Left blanks for undiscovered elements | Mendeleev |
Arranged by Nuclear charge Physical and Chemical Properties of elements are periodic functions of Atomic # | Moseley |
Property of elements in the table change with the position; follow periodic Law | Periodic Functions |
Arranges elements in order of atomic number so that elements with similar properties fall in same groups | Modern Periodic Table |
Found noble gasses in 1894 | Strutt, Ramsay, Dorn |
Similar Chem. Behavior Bottom table | Lanthanides |
Similar to Lanthanides but with own specific properties Bottom of bottom | Actinides |
Layed out in periods (horizontal): allows for families with similar properties Atomic Numbers in Groups 1 &18: 8,8,18,18,32 | Periodicity |
When Elements are are odered by increasing atomic number elements with the same properties appear periodically | Periodic Law |