The tendency to show-2 oxidation state diminishes from S to Po. W
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    The p-Block Elements

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    431. The tendency to show-2 oxidation state diminishes from S to Po. Why?

    Electropositive character (metallic character) increases from top to bottom in the group. Due to increase in atomic size, the tendency to gain 2 electrons decreases down the group 16 elements.
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    432. Why does oxygen not show an oxidation state of + 4 and + 6 like sulphur?
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    433. Give one example each of the oxoacids of phosphorus in which the P has the oxidation state of (i) + 4 (ii) + 3.
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    434. Name all the elements of group 16. Which elements is radioactive?
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    435. Why are group 16 elements called chalcogens?
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    436. Give two important uses of Selenium.
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    437. Name two allotrope of sulphur. Which allotrope is stable at room temperature?
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    438. Which allotrope of selenium coducts electricity?
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    439. Why does sulphur in vapour state exhibit paramagnetic behaviour?
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    440. Why are group 16 elements called polymorphic elements?
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