मूलानुपाती सूत्र \(CrCl _{3} .3 NH _{3} .3 H _{2} O\) के अष्टफलकीय उपसहसंयोजी यौगिक के \(1\) मोल से \(AgCl\) के तीन मोल अवक्षेपित होते हैं, यदि इसको सिल्वर नाइट्रेट के आधिक्य में अभिक्रियित किया जाय। ऐसे क्लोराइड आयनों की संख्या जो धातु आयन की द्वितीयक संयोजकता को संतुष्ट करते हैं।

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.