Be, Mg, Ca, Sr, Ba and Ra belong to group - ______ of the modern periodic table.
A
8
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B
12
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C
15
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D
2
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Solution
The correct option is D 2 The elements in the modern periodic table are arranged in 18 vertical columns called groups and 7 horizontal rows called periods. Be, Mg, Ca, Sr, Ba and Ra belong to group-II of the modern periodic table.