Question
In the modern periodic table, there are ___
Answer: Option A
:
A and C
In the modern periodic table, there are 18 groups and 7 periods. Elements are arranged in rows and columns. The horizontal rows are known as periods while the vertical columns are known as groups.
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:
A and C
In the modern periodic table, there are 18 groups and 7 periods. Elements are arranged in rows and columns. The horizontal rows are known as periods while the vertical columns are known as groups.
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