📊 Physics
Q. Atoms of an element differ from those of all other elements in
  • (A) Number of neutrons and number of valence electrons
  • (B) Atomic number and electronic configuration
  • (C) Number of neutrons and electronic configuration
  • (D) Atomic number and number of valence electrons
✅ Correct Answer: (B) Atomic number and electronic configuration

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Ram Sharma
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