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Question
How many groups and periods are there in the modern periodic table?
How many groups and periods are there in the modern periodic table?
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Solution
The correct option is C 18, 7
In the modern periodic table, there are 18 columns called groups and 7 rows called periods.
The seventh period is still incomplete in the sense that there are more elements being discovered which will find a place in this row. While their structure can be predicted, most properties cannot be confirmed until tangible proof of existence is witnessed.
18, 7
In the modern periodic table, there are 18 columns called groups and 7 rows called periods.
The seventh period is still incomplete in the sense that there are more elements being discovered which will find a place in this row. While their structure can be predicted, most properties cannot be confirmed until tangible proof of existence is witnessed.
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