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प्रश्न
Which of the following elements does not form hydride by direct heating with dihydrogen?
पर्याय
Be
Mg
Sr
Ba
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उत्तर
Be
Explanation:
Due to high ionization enthalpy and small size, Be does not react with hydrogen by direct heating.
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संबंधित प्रश्न
Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?
Which one of the following alkali metals gives hydrated salts?
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(i) High boiling point.
(ii) High negative standard electrode potential.
(iii) High density.
(iv) Large atomic size.
Which of the following compounds are readily soluble in water?
(i) BeSO4
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(iv) SrSO4
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The ease of absorption of the hydrated alkali metals ions in an ion-exchange resin follows the order:
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| List-I | List-II |
| (Metal) | (Application) |
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| (b) Ga | (II) Water repellent sprays |
| (c) B | (III) Photoelectric cells |
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Choose the most appropriate answer from the options given below:
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The metal mainly used in devising photoelectric cells is ______.
The correct order of hydration enthapies of alkali metal ions is ______.
