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The S-Block Elements

Question
CBSEENCH11006989
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Why alkali metals do not form M2+ ions?

Solution

It is because after the loss of one electron, alkali metal ion (M+ ) is formed which has stable noble gas configuration and it is very difficult to remove another electron to form M2+ ion as the second ionisation enthalpy is very high. For example, when lithium loses one electron and forms Li+ which is similar to Helium atom.
 

Some More Questions From The s-Block Elements Chapter

Which is the most reactive alkali metal and why?

Why alkali metals do not form M2+ ions?

Name the radio active element in group 1. How does it resemble with the remaining elements of the group?

Why alkali metals are normally kept in kerosene oil?

Why lithium cannot be stored in kerosene?

Why does lithium form complexes?

Why are alkali metal ions diamagnetic and colourless?

Why are alkali metals the most electropositive in nature?

Explain why is sodium less reactive than potassium.

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