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Alkaline Earth Metals: Solubility and Anomalous Behaviour of Beryllium

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Alkaline Earth Metals: Solubility and Anomalous Behaviour of Beryllium

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Questions and Answers

What is the primary reason for the anomalous behaviour of beryllium compared to other alkaline earth metals?

High reactivity with water

Low melting point

High ionisation enthalpy (correct)

Low ionisation enthalpy

What is the maximum coordination number exhibited by beryllium?

4 (correct)

What is the primary use of calcium oxide?

Preparation of calcium carbonate

Not mentioned in the passage (correct)

Manufacturing of cement

Production of calcium hydroxide

What is the temperature range for the commercial preparation of calcium oxide?

1070-1270 K Signup and view all the answers

What is the byproduct of the reaction between calcium carbonate and heat?

CO2 Signup and view all the answers

What is the melting point of calcium oxide?

2870 K Signup and view all the answers

What is the electronic configuration of Francium?

[Xe] 6s1 Signup and view all the answers

What is the trend observed in the hydration enthalpy of alkali metals?

It decreases down the group Signup and view all the answers

What is the atomic mass of Potassium in g/mol?

39.10 Signup and view all the answers

What is the use of Sodium in everyday life?

In the production of soap Signup and view all the answers

Which of the following alkali metals forms a yellow coloured flame?

Sodium Signup and view all the answers

What is the application of Caesium in atomic clocks?

In the regulation of time Signup and view all the answers

What is the general trend in the density of alkali metals as you move down the group from lithium to caesium?

It increases Signup and view all the answers

Which of the following alkali metals has the maximum degree of hydration?

Lithium Signup and view all the answers

Which of the following is an industrially important compound of sodium?

Portland cement Signup and view all the answers

What is the biological significance of potassium?

It is essential for various biological processes Signup and view all the answers

What is the general electronic configuration of alkali metals?

[noble gas] ns Signup and view all the answers

Which of the following is NOT a characteristic of alkali metals?

They are hard and dense Signup and view all the answers