We use cookies to improve your experience and understand how Examtube is used. You can accept analytics cookies or continue with essential cookies only.
Privacy policy4 public questions tagged with this topic.
First ionization enthalpy increases across a period. Among Na, Mg, Si, and Ar, Ar (group 18, period 3) has the highest value due to its stable noble gas configuration.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Periodic Trends - Atomic Radii Ionic Radii and Ionization Enthalpy
Third ionization enthalpy peaks when removing an electron from a noble gas-like X²⁺ ion. Mg (after losing two electrons, becomes Mg²⁺ with 1s² 2s² 2p⁶) has the highest value.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Periodic Trends - Atomic Radii Ionic Radii and Ionization Enthalpy
The third period (n=3) includes 3s and 3p orbitals, accommodating 8 electrons, hence 8 elements (Na to Ar).
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Nomenclature of Elements with Atomic Number >100
Fourth ionization enthalpy peaks when removing an electron from a stable X³⁺ ion. Al (after losing three electrons, becomes Al³⁺ with 1s² 2s² 2p⁶) has the highest value in period 3.
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Electronic Configuration and Types of Elements - s p d f Blocks
This page is supported by advertisements. An ad blocker is stopping those ads from loading, so we cannot show the rest of the page yet. Pause the blocker for this site, then continue. We will check again automatically.
You can keep using this site after advertisements are allowed to load.
