4 public questions tagged with this topic.
This configuration (Z=31) corresponds to Ga (period 4, group 13), with 4p¹ distinguishing it from Zn (4p⁰), Ge (4p²), or As (4p³).
Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Anomalous Properties and Second Period and Chemical Reactivity
For Be³⁺ (Z=4), E = Z² EH = 16 × 13.6. Ratio = 16.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Shapes of Orbitals - s p d f and Nodes and Radial Probability
For He⁺ (Z=2), E = 4 × 2.18×10⁻¹⁸ = 8.72×10⁻¹⁸ J.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Quantum Numbers - Principal Azimuthal Magnetic Spin
For Li²⁺ (Z=3), E = Z² EH. Ratio = 9.
Ref: NCERT Class 11 Chemistry > Chapter 2: Structure of Atom > Topic: Electronic Configuration - Aufbau Pauli Hund and Stability
