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For alkali metals, which one of the following trends is incorrect ? - Chemistry

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प्रश्न

For alkali metals, which one of the following trends is incorrect?

पर्याय

  • 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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Group 1 Elements - Alkali Metals
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Alkali and Alkaline Earth Metals - Evaluation [पृष्ठ १५०]

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सामाचीर कलवी Chemistry - Volume 1 and 2 [English] Class 11 TN Board
पाठ 5 Alkali and Alkaline Earth Metals
Evaluation | Q I. 1. | पृष्ठ १५०

संबंधित प्रश्‍न

Write a balanced equation for the reaction between Na2O and CO2.


The alkali metals are low melting. Which of the following alkali metal is expected to melt if the room temperature rises to 30°C?


Which of the following compounds are readily soluble in water?

(i) BeSO4

(ii) MgSO4

(iii) BaSO4

(iv) SrSO4 


When heated in air, the alkali metals form various oxides. Mention the oxides formed by Li, Na and K.


Ions of an element of group 1 participate in the transmission of nerve signals and transport of sugars and aminoacids into cells. This element imparts yellow colour to the flame in flame test and forms an oxide and a peroxide with oxygen. Identify the element and write chemical reaction to show the formation of its peroxide. Why does the element impart colour to the flame?


The valence shell electronic configuration of alkali metals is ______. 


Match List-I with List-II.

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:


A white precipitate was formed when BaCl2 was added to extract of an inorganic salt. Farther, a gas 'X' with characteristic odour was released when the formed white precipitate was dissolved in dilute HCl. The anion present in the inorganic salt is ______.


Nitrogen combines with metals to form ______.


Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : Lithium salts are hydrated.

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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