HomeChemistryThe elements which are very abundant in earth crust are 69. The elements which are very abundant in earth crust areBy Admin / September 17, 2025 A. Si & AI B. Ca & Mg C. B & AI D. All ✅ The correct answer is option A.
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2. The mass of one mole of an electron is Leave a Comment / Chemistry, Chemistry Diagnostic Test MCQs / By Admin