HomeChemistryElements in the same vertical group of the periodic table have same 256. Elements in the same vertical group of the periodic table have sameBy Admin / September 17, 2025 A. Number of valence electrons B. Atomic number C. Atomic mass D. Atomic volume ✅ 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