alleryStart learning →Order the steps to the periodic table
Exercise and reference answers
- Steps
- Dobereiner's triads
- Newlands' octaves
- Mendeleev's gaps
- Moseley's X-rays
- Instructions
- Tap the milestones from the earliest to the latest.
Explanation
_Source: syllabus Chemistry Part I, Chapter 3, Classification of Elements and Periodicity in Properties._