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Calcium carbonate decompose on heating t...

Calcium carbonate decompose on heating to form calcium oxide and carbon dioxide. when 10g of calcium carbonate is decomposed completely then 5.6g of calcium oxide is formed. calculate mass of carbon dioxide formed.

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The correct Answer is:
C
Hint : `+ 7` is the highest oxidation state because 5s, 6d and 7s energy levels are of comparable energies, so, all these three subshells can participate.
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ACCURATE PUBLICATION-D & F BLOCK ELEMENTS -2 OR 5 MARKS QUESTIONS
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  2. What are transition elements ? Which of the d block elements are not r...

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  3. What are the characteristics of the transition elements ?

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  4. In what way is the electronic configuration of transition elements dif...

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  5. Why is Copper considered as transition metal ?

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  6. Scandium (z = 21) is a transition element but zinc (z = 30) is not. Ex...

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  7. Sliver atom has completely filled d-orbitals (4d^10) in its ground sta...

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  8. [Ti (H2O)6]^(3+) is coloured while [Sc(H2O)6]^(3+) is colourless. Expl...

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  9. Explain why TiCl3 is coloured but TiCl4 is colourless ?

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  10. Explain why [Ti (H2O)6]^(3+) is violet while [Ti (H2O)6]^(4+) is colou...

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  11. Why Cd^(2+) salts are white ? Cd=48

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  12. Which of the two is paramagnetic V(IV) or V(V) and why ?

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  13. Why does Mn(II) shows maximum paramagnetic character among the dival...

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  14. Name the elements represented by following symbols : Hg , Pb , Au , Ag...

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  15. What is atomicity ? Explain with two examples.

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  16. What is the atomicity of the following : oxygen

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  17. Explain why Cu(I) is diamagnetic while Cu(II) is paramagnetic in natur...

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  18. Transition metals have high melting points and boiling points. Why?

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  19. What is the atomicity of the following : ozone

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  20. What is the atomicity of the following : neon

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  21. What is the atomicity of the following : phosphorous

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