How many horizontal rows, called periods, were present in Mendeleev's short periodic table? — Periodic Table and Periodicity Chemistry Question
Question
How many horizontal rows, called periods, were present in Mendeleev's short periodic table?
Answer: 7
💡 Solution & Explanation
Mendeleev's original periodic table consists of horizontal rows called periods and vertical columns called groups. There were 7 periods in Mendeleev's table.
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