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Assertion (A): Atomic number of sodium is 11. Reason (R): Sodium has a body centred cubic lattice.

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Assertion (A): Atomic number of sodium is 11. Reason (R): Sodium has a body centred cubic lattice. Answer: Both A and R are true but R is not correct explanation of A

Atomic number is not dependent on lattice structure.

Question context

This question is part of 📡 Electronics and Communication Engineering (ECE) within the broader 🛠️ Engineering Essentials subject and appears in the DemoPaper-Pakistan preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.