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#polarizing power

2 public questions tagged with this topic.

Electronic Configuration and Types of Elements - s p d f Blocks

Which ion among the following isoelectronic species with 18 electrons has the highest polarizing power?

For isoelectronic species (18 electrons), polarizing power increases with charge and decreases with size. Sc³⁺ (Z=21, +3) has the highest polarizing power compared to K+, Ca²⁺, or Cl⁻.

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

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Anomalous Properties and Second Period and Chemical Reactivity

Which element in group 13 has the highest tendency to form covalent compounds due to its polarizing power?

Polarizing power increases with smaller size and higher charge density. B³⁺ (smallest in group 13) has the highest tendency to form covalent compounds (e.g., BF₃) compared to Al, Ga, or In.

Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Anomalous Properties and Second Period and Chemical Reactivity

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