Question

how many groups and periods are there in modern table. how do atomic size and metallic characters as we go. 1. down a grow. 2. left to right.

Answer 1

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

⭕Metallic character of an element decreases on moving left to right in a periodic table. and increases on moving down a group.



⭕Atomic size decreases on moving from left to right in a periodic table and increases on moving down a group.



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