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TARGET PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -Apply your knowledge
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- Identify dobereiner's traids from the following group of elements havi...
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- There are some vacant places in the Mendeleev's periodic table. In som...
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- Due to uncertainty in the masses of some of the elements, a question m...
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- Chlorine has two isotopes, viz. Cl-35 and Cl-37 Their atomic masses ar...
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- Write the molecular formulae of oxides of the following elements by re...
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- Write the molecular formulea of compounds of the following elements wi...
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- How is the problem regarding the position of cobalt("59CO) and nickel ...
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- Can there be an element with atomic mas 53 or 54 in between the two el...
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- Position of the elements in the periodic table: What do you think? ...
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- Go through the Modern periodic table (fig2.1) and write the names one ...
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- Write the electronic configuration of the first four elements in this ...
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- Which similarity do you find in their configuration?
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- How many valence electrons are there in each of these elements?
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