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How many groups and periods are there in the modern periodic table?

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Question

How many groups and periods are there in the modern periodic table?

Very Short Answer
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Solution

There are 18 groups and 7 periods in the modern periodic table.

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Periods and Electronic Configuration
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Q 5. 1.
Chapter 1: Periodic Properties and Variations of Properties - EXERCISE [Page 20]

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Lakhmir Singh Chemistry [English] Class 10 ICSE
Chapter 1 Periodic Properties and Variations of Properties
EXERCISE | Q 5. 1. | Page 20
2014-2015 (March) Delhi Set 1 (with solutions)
Q 9 | 3 marks
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