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Question
Match the columns.
| Column A | Column B |
| 1) Eka-aluminium | a) Scandium |
| 2) Eka-Silicon | b) Gallium |
| 3) Eka-boron | c) Germanium |
| d) Beryllium |
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Solution
| Column A | Column B |
| 1) Eka-aluminium | b) Gallium |
| 2) Eka-Silicon | c) Germanium |
| 3) Eka- boron | a) Scandium |
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| Column A | Column B |
| 1) Triads | a) Mendeleev |
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| 3) Atomic number | c) Thomson |
| 4) Atomic mass number | d) Moseley |
| e) Newland |
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