Alkaline Earth Metals- FAQ in JEE

Alkaline Earth Metals

Joint entrance examination (JEE) is conducted every year by CBSE Board (Central Board of Secondary Education) in order to provide admissions to aspiring candidates in the prestigious technical colleges of our country. Students aiming to study in IITs should have a clear goal and complement hard work. Chemistry is the easiest of all the three subjects and therefore should be focused first. The questions asked in chemistry are generally direct and less time taking as compared to mathematics and physics. A few important chapters and some concepts are highly significant as there is a pattern in which these questions repeat in JEE. Below are the frequently asked question in JEE from Alkaline Earth Metals

 1. What are the important topics in alkaline earth metals that need to be focused for JEE?

Alkaline earth metals  or Alkali earth metals are a part of the s block elements. It is one of the fundamental chapters in chemistry for JEE Syllabus. The topics to be focused here are:

  • Periodicity of alkali earth metals – The sequence of acid and basic character and the atomic radius calculations are very important.
  • Extraction of metals – The process of extraction of these metals from their respective ores, the reactions and the conditions required for these reactions.
  • Physical and chemical properties of compounds.
  • Reactions with non-metals and acids – Name of the compounds that are formed.

Alkaline Earth Metals

2. Why is the 2nd ionization energies of the elements of group I higher than those of the elements of group II?

The alkali metals have one electron in their outermost shell, they lose this electron to attain the noble gas configuration. The 2nd electron in case of alkali metals is to be removed from a cation which is highly stable. But in case of alkaline earth metals, they have 2 electrons in their outermost shell, therefore they need to lose two electrons in order to attain stability. The 2nd electron in alkaline earth metals is to be removed from a nation which is yet to acquire the stable noble gas configuration. Therefore the removal of 2nd electron in case of alkaline earth metals requires much less energy than that in case of alkali metals.

3. What books should I study and which books are to be used as reference for JEE?

Go through NCERT for class 11, this book contains all the details in a very precise way. A thorough study of this book can help you to understand the fundamental concepts. The important points in the book are mentioned properly and hence it is the most student-friendly book. For practice use the books by O. P. Tandon for inorganic chemistry. J. D. Lee is a very conceptual book and can be used as a reference.

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Practise This Question

There was a race held in your school and you wanted to watch the race and went to the ground. Three people started from A, B and C and stopped at the end point. Since the starting point is different for all, you felt that the game is not fair.

However, a friend of yours told you that the radius of the track B is more than radius of track A and hence everybody runs the same distance. He then asked you to find out the radius of track B, given that the radius of track A is 14m and distance between B and the end point is 22 m (as given in the figure).