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Question
Define groups of modern periodic table.
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Solution
In the modern periodic table, groups (also known as families) are the 18 vertical columns that organize chemical elements by shared properties. Unlike periods, which are horizontal rows representing electron shells, groups are vertical columns of elements with similar chemical properties.
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The position of three elements A, B and C in the Periodic Table are shown below –
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Group 16
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Group 17
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A
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B
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