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  • Which of the following statements is incorrect true regarding the hydrides formed by d-block and f-block elements?Option: 1 Group 7, 8, and 9 metals

Which of the following statements is incorrect true regarding the hydrides formed by d-block and f-block elements?

Option: 1

Group 7, 8, and 9 metals do not form hydrides.


Option: 2

Only chromium among Group 6 metals forms a hydride (CrH).


Option: 3

These hydrides are stoichiometric and have a perfect 1:1 ratio of metal to hydrogen.


Option: 4

Interstitial hydrides have the same lattice structure as their parent metals.


Answers (1)

best_answer

 they are almost always nonstoichiometric, being deficient in hydrogen. For

example, \mathrm{LaH_2._8_7, YbH_2._5_5,} \mathrm{\mathrm{TiH}_{1.5-1.8} ,\mathrm{ZrH}_{1,3-1.75}} etc. In such hydrides, the law of constant composition does not hold good.

 

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Nehul

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