Question
Mention features of Mendeleev’s periodic table.
✓
Answer
Features of Mendeleev’s periodic table:
- In Mendeleev’s periodic table, all 63 elements were arranged in an increasing order of their atomic masses. The serial or ordinal number of an element in the increasing order of atomic mass was referred to as its atomic number.
- Mendeleev’s periodic table consisted of vertical groups and horizontal series (now called periods).
- Elements belonging to the same group showed similar properties.
- Properties of elements in a series/period showed gradual variation from left to right.
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