MCQ · কৃষি গুচ্ছ সমন্বিত ভর্তি পরীক্ষা · ২০২৪
CO₃²⁻ এর মোট ইলেকট্রন সংখ্যা কত?
- ক24
- খ32
- গ38
- ঘ40
সঠিক উত্তর: খ) 32
ব্যাখ্যা
C (6) + 3 × O (8) + 2 = 32টি ইলেকট্রন।
এই বিষয়ের আরও প্রশ্ন
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