S Shivam 🎓 Tutor III ⭐ 8.86K Points 📊 Science Q. Mass number is the sum of (A) Electrons and Protons (B) Protons and Neutrons (C) Electrons and Neutrons (D) Only Protons 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) Protons and Neutrons You must be Logged in to update hint/solution 💬 Discussion 💬 Comment