PS CH12 TEST
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5 terms
Terms | Definitions |
|---|---|
 Compare the element hydrogen with the alkali sodium metal? | atomic weight of the two elements differ Hydrogen has a single positive charge Alkali metal (sodium) is more highly reactive than hydrogen |
| What does the periodic law state? | physical and chemical properties of elements and their periodic functions of their atomic numbers |
| What are the actinides? | elements with increasing atomic number of actinium highly reactive and a solid at room temperature |
| Most chemically reactive elements? | Chlorine, Oxygen, Argon, and Neon |
| How is Moseley's basis arranging the elements different from Mendeleev's? | Mendeleev's periodic table was arranged according to the element's atomic mass increasing, as for Moseley's was increasing atomic number |
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