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MODERN PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-EXAMPLE
- The third period of the long form of periodic table contains the follo...
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- Three elements X,Y and Z belong to groups 2,15 and 17 respectivley. Pr...
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- Three elements X,Y and Z belong to groups 2,15 and 17 respectivley. Pr...
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- A part of the periodic table is given below. The elements sodium, carb...
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- A part of the periodic table is given below. The elements sodium, carb...
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- Did doberiner's triads also exist in the columns of newlands's octaves...
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- What were the limitations of deberiner's calssification?
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- What were the limitations of newland's law of octaves?
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- Besides gallium which other elements have since been discovered to fil...
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- What were thae criteria used by Mendeleev in creating his periodic tab...
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- Why do you think the noble gases are placed in a separate group?
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- How could modern periodic table remove various anomallies of mendeleev...
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- Name two elements you would expect to show chemical reactions similar ...
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- Name three elements that have only a single electron in their outermos...
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- Name two elements that have two electrons in their outermost shells
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- Name: three elements with filled outermost shells
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- Lithium, sodium, potassium are all metals that react with water to lib...
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- Helium is an unreactive gas and neon is gas of extermely low reactivit...
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- In the modern periodic table which are the metals among the first ten ...
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- By considering their position in the periodic table, which one of the ...
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