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Give reasons for the diagonal relationsh...

Give reasons for the diagonal relationship observed in the periodic table .

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Diagonal relationship is due to similar sizes of atoms (or) ions
Diagonal relationship is due to similar electro negativities of the respective elements ,
diagonally similar elements possess same polarising power.
Polarizing power= `("ionic charge")/("ionic radius")^2`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-THE S-BLOCK ELEMENTS -VERY SHORT ANSWER QUESTIONS
  1. Give reasons for the diagonal relationship observed in the periodic ta...

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  2. Write completely the electronic configurations of K and Rb.

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  3. Lithium salts are mostly hydrated . Why ?

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  4. Which of the alkali matals shows abnormal density ? What is the order ...

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  5. Lithium react with water less vigorously than sodium. Give your reason...

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  6. Lithium lodide is the most covalent among the alkali metal halides . G...

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  7. In what respects lithium hydrogen carbonate differs from other alkali ...

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  8. Write the complete electronic configuretion of any two alkaline metals...

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  9. Tell about the variation of m. pts., and b.pts among the alkaline eart...

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  10. What are the characteristic colours imparted by the II A elements?

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  11. What happens when magnesium metal is burnt in air?

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  12. Lithium carbonate is not so stable to heat as the other alkali metal c...

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  13. Write a balanced equation for the formation of ammoniated IIA metal io...

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  14. The fluorides of alkaline earth metals are relatively less soluble tha...

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  15. What happens when hydrated Mg(NO3)(2) is heated? Give the balanced equ...

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  16. Why does the solubility of alkaline earth metal hydroxides in water in...

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  17. Why does the solubility of alkaline earth metal carbonates and sulphat...

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  18. Write the average composition of Portland cement.

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  19. Why is gypsum added to cement?

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  20. Why are alkali metals not found in the free state in nature?

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