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prodeepbiswas
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Asked: 2021-06-08T09:16:30+00:00 In:

Which of the following statements about the Modern Periodic Table is correct ?

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0%(a) It has 18 horizontal rows known as Periods.
0%(b) It has 7 vertical columns known as Periods.
100%(c) It has 18 vertical columns known as Groups. ( 2 voters )
0%(d) It has 7 horizontal rows known as Groups.
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    1. (c) It has 18 vertical columns known as Groups.

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