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Write the number of periods and groups i...

Write the number of periods and groups in the Modern Periodic Table. How does the metallic character of elements vary on moving
down a group ? Give reason to justify your answer.

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### Step-by-Step Solution 1. **Identify the Number of Periods and Groups in the Modern Periodic Table**: - The modern periodic table consists of **7 periods** and **18 groups**. - Periods are the horizontal rows, while groups are the vertical columns. 2. **Understanding Metallic Character**: - Metallic character refers to the tendency of an element to lose electrons and form positive ions (cations). ...
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