<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>D</mml:mi><mml:msub><mml:mover accent="true"><mml:mi>D</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mn>1</mml:mn></mml:msub><mml:mo stretchy="false">(</m

As in previous decades, a comprehensive understanding of the intricate internal configuration of hadrons continues to be a central objective within both experimental and theoretical hadron physics. This pursuit plays a pivotal role in advancing our knowledge of quantum chromodynamics (QCD) and critically evaluating the robustness and accuracy of the theoretical models developed to date. Furthermore, deciphering the underlying mechanisms of exotic states, both those currently observed and those anticipated in future experiments, remains a pressing and unresolved challenge. Motivated by this, in the present study, we investigate the electromagnetic properties of the <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>D</a:mi><a:msub><a:mover accent="true"><a:mi>D</a:mi><a:mo stretchy="false">¯</a:mo></a:mover><a:mn>1</a:mn></a:msub><a:mo stretchy="false">(</a:mo><a:mn>2420</a:mn><a:mo stretchy="false">)</a:mo></a:math> and <g:math xmlns:g="http://www.w3.org/1998/Math/MathML" display="inline"><g:msup><g:mi>D</g:mi><g:mo>*</g:mo></g:msup><g:msup><g:mover accent="true"><g:mi>D</g:mi><g:mo stretchy="false">¯</g:mo></g:mover><g:mo>*</g:mo></g:msup><g:mo stretchy="false">(</g:mo><g:mn>2400</g:mn><g:mo stretchy="false">)</g:mo></g:math> molecular tetraquark states with quantum numbers <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:msup><m:mi>J</m:mi><m:mrow><m:mi>P</m:mi><m:mi>C</m:mi></m:mrow></m:msup><m:mo>=</m:mo><m:msup><m:mn>1</m:mn><m:mrow><m:mo>−</m:mo><m:mo>−</m:mo></m:mrow></m:msup></m:math>, using the QCD light-cone sum rule method. These states are analyzed within a hadronic molecular framework, where their magnetic and quadrupole moments are computed to probe internal structure and geometric deformation. Our results reveal distinct electromagnetic signatures, with the magnetic moments primarily dominated by light-quark contributions, and the quadrupole moments suggesting an oblate charge distribution. The findings are compared with prior studies assuming compact tetraquark configurations, emphasizing the sensitivity of electromagnetic observables to the underlying hadronic structure. This analysis provides critical insights into the nature of exotic hadrons and contributes to the broader understanding of QCD dynamics in the nonperturbative regime.