Part A
Identify the factors that guided Mendeleev while classifying the elements. Check all that apply:
- Organizing by increasing atomic number
- Grouping similar elements together
- Organizing by increasing atomic mass
- Grouping isotopes of various elements
Part B
Mendeleev used chemical formulas. Using superscripts to indicate the number of atoms of each element in a chemical formula. For example, I would write V charges and subscript to denote the number of each element.