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Question
Match the columns.
| Column A | Column B |
| 1) Triads | a) Mendeleev |
| 2) Octave | b) Dobereiner |
| 3) Atomic number | c) Thomson |
| 4) Atomic mass number | d) Moseley |
| e) Newland |
Solution
| Column A | Column B |
| 1) Triads | b) Dobereiner |
| 2) Octave | e) Newland |
| 3) Atomic number | d) Moseley |
| 4) Atomic mass number | a) Mendeleev |
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