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Non-stoichiometric compounds are...

Non-stoichiometric compounds are

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Transition metals can form hydrides with variable compositions known as non-stoichiometric hydrides e.g., `NiH_(0.6-0.7),TiH_(1.5-1.8)` etc.
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Assertion (A) : Non-stoichiometric compounds are called Bertholide compounds. NaCl and KCl crystal, when heated in an atmosphere of Na and K varpours, respectively, they impart violet and yellow colours to NaCl and KCl , respectively. Reason (R ) : Metal excess defect is due to the presence of extra cations atg the interstitial sites. The excess metal ions move to the interstitial sites and the electrons to the neighbouring sites. The colour results byt the excitation of these electrons by absorbing suitable energy from visible light. When the excited electroon comes back to the ground state, there is emission of radiation in the visible region and gives complimentary colour.

The non- stoichiometric compound Fe_(0.94)O is formed when x% of Fe^(2+) ions are replaced by as many 2//3 Fe^(3+) ions The value of x is:

The non-stoichiometric compound Fe_0.94O is formed when some Fe^(+2) ions are replaced by Fe^(+3) ions. What is the percentage of Fe^(+3) ions in this ionic lattice ?

1.44 gram if titanium (Ti) reacted with excess of O_(2) and produce x gram of non - stoichiometric compound Ti_(1.44)O . The value of x is :

1, 44 gran if tutanium (Ti) reacted with excess of O_(2) and produce x gram of non - stoichiometric compound Ti_(1.44)O . The value of x is :

1.44 gram of Titanium (Ti) reacted with excess of O_(2) and produced x gram of non-stoichiometric compound Ti ._(0.44)O . The value of x will be :[Ti = 48]

Non-stoichiometric cuprous oxide. Cu_(2)O can be perpared in laboratory. In this oxide, copper-to-oxygen ratio is slightly less than 2 : 1. can you account for the fact that this substance is a p-type semiconductors?

Non-stoichiometric cuprous oxide. Cu_(2)O can be perpared in laboratory. In this oxide, copper-to-oxygen ratio is slightly less than 2 : 1. can you account for the fact that this substance is a p-type semiconductors?

Non-stoichiometric hydrides are formed by

Analyses shows that FeO has a non-stoichiometric composition with formula Fe_(0.95)O_(1.00) . Give reason.

AAKASH INSTITUTE ENGLISH-HYDROGEN-Try Yourself
  1. a. Would you expect the hydrides of N,O and F to have lower boiling po...

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  2. a. Would you except the hydrides of N,O and F to have lower boiling po...

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  3. Non-stoichiometric compounds are

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  4. Which basis class of molecular hydrides act as lewis bases?

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  5. How is lithium aluminium hydride prepared? What is its important use?

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  6. How many hydrogen bonded water molecules are associated with CuSO(4). ...

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  7. Which property of water is responsible for its very strong hydrating t...

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  8. Water acts as a/an when it reacts with ammonia.

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  9. Cation exchange resins are generated by treating with.

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  10. Why temporary hardness of water is called so?

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  11. Which anions produce permanent hardness in water?

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  12. Which of the following pair of ions makes the water hard(temporary) ?

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  13. Mention some important uses of heavy water.

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  14. Strength of 10 volume hydrogen peroxide solution means

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  15. H(2)O(2) is always stored in black bottles because

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  16. Is H(2)O(2) planar in nature?

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  17. The ionisation energy of hydrogen is high as compared to alkali metals...

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  18. Calculate oxidation number of Br in Br3O8. ​

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  19. Which of the following isotopes of hydrogen is radioactive?

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  20. Hydrogen accepts an electron to form inert gas configuration. In this ...

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