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प्रश्न
For alkali metals, which one of the following trends is incorrect?
विकल्प
Hydration energy: Li > Na > K > Rb
Ionisation energy: Li > Na > K > Rb
Density: Li < Na < K < Rb
Atomic size: Li < Na < K < Rb
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उत्तर
Density: Li < Na < K < Rb
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संबंधित प्रश्न
Which one of the following alkali metals gives hydrated salts?
Which of the following statements is incorrect?
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(ii) Beryllium sulphate is readily soluble in water as the greater hydration enthalpy of Be2+ overcomes the lattice enthalpy factor.
(iii) Beryllium exhibits coordination number more than four.
(iv) Beryllium oxide is purely acidic in nature.
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| List-I | List-II |
| (Metal) | (Application) |
| (a) Cs | (I) High temperature thermometer |
| (b) Ga | (II) Water repellent sprays |
| (c) B | (III) Photoelectric cells |
| (d) Si | (IV) Bullet proof vest |
Choose the most appropriate answer from the options given below:
Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).
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Reason (R) : Lithium has higher polarising power than other alkali metal group members.
In the light of the above statements, choose the most appropriate answer from the options given below :
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