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Why do all elements of the same group ha...

Why do all elements of the same group have similar properties?

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Since valence electrons are in the outermost shell, they are weakly attracted by the nucleus and are free to interact with other substances. Hence, valence electrons are responsible for all the chemical properties of an atom. Elements in the same group of the periodic table have the same number of valence electrons. Therefore, they have similar chemical properties.
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ZEN PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS-ZEE ADDITIONAL QUESTIONS SECTIONS (SHORT ANSWER (SA) TYPE QUESTIONS)
  1. Mention the merits of Newlands' law of octaves.

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  2. What were the limitations of Newlands' law of Octaves ?

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  3. Why do all elements of the same group have similar properties?

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  4. The atomic numbers of three elements A, B, and Care 12, 18, and 20 res...

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  5. Taking the example of an element of atomic number 16, explain how the ...

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  6. The electronic configuration of an element 'X' is 2, 8, 8, 2. To which...

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  7. All the members of group I are metals. Li and Na react with water rapi...

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  8. Atomic number is considered to be a more appropriate parameter than at...

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  9. How does the electronegativity changes as we move from left to right a...

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  10. How would the tendency to gain electrons change as you go from left to...

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  11. a) How does electropositivity of elements get affected as we move: (i)...

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  12. Why are metals electropositive and non-metals electronegative in natur...

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  13. Name three elements with seven valence electrons in their outermost sh...

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  14. Inert gases are placed in a separate group in the Modern Periodic Tabl...

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  15. a] What are metalloids? Write any two examples. b] Given below are s...

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  16. a] Write the trend of atomic size and metallic character along a group...

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  17. a] Name the element with atomic number 17.   b]To which period does i...

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  18. Draw a part of the long form of the periodic table showing a non-metal...

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  19. (i) Predict which of the following elements will form cation and will ...

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  20. Write the name, symbol and electronic configuration of an element X wh...

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