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Why do you think the noble gases are pla...

Why do you think the noble gases are placed in a separate group?

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Out of all the elements known, noble gases such as helium (He), neon (Ne), argon (Ar), krypton (Kr) and xenon(Xe) are the most inert (unreactive) and are present in extremely low concentrations in our atmosphere. Therefore, they are grouped together in a separate group called zero group in the Mendeleev.s periodic table.
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MTG IIT JEE FOUNDATION-PERIODIC CLASSIFICATION OF ELEMENTS-NCERT Section
  1. Besides gallium, which other elements have since been discovered that ...

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  2. What were the criteria used by Mendeléev in creating his Periodic Tabl...

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  3. Why do you think the noble gases are placed in a separate group?

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  4. How could the Modern Periodic Table remove various anomalies of Mendel...

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  5. Name two elements you would expect to show chemical reactions similar ...

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  6. Name: three elements that have a single electron in their outermost sh...

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  7. Name: two elements that have two electrons in their outermost shells.

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  8. Name: three elements with filled outermost shells.

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  9. Lithium, sodium, potassium are all metals that react with water to lib...

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  10. Helium is an unreactive gas and neon is a gas of extremely low reactiv...

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  11. In the Modern Periodic Table, which are the metals among the first ten...

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  12. By considering their position in the Periodic Table, which one of the ...

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  13. Which of the following statements is not a correct statement about the...

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  14. Element X forms a chloride with the formula XCl(2), which is a solid w...

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  15. which element has two shells, both of which are completely filled wi...

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  16. which element has the electronic configuration 2, 8, 2?

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  17. which element has a total of three shells, with four electrons in it...

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  18. which element has a total of two shells, with three electrons in its...

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  19. which element has Twice as many electrons in its second shell as in ...

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  20. What property do all elements in the same column of the periodic table...

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