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प्रश्न
Which of the following statements about the Modern Periodic Table is correct:
विकल्प
It has 18 horizontal rows known as Periods
It has 7 vertical columns known as Periods
It has 18 vertical columns known as Groups
It has 7 horizontal rows known as Groups
उत्तर
It has 18 vertical columns known as Groups
Explanation -
The modern periodic table has 18 vertical columns known as Groups.
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संबंधित प्रश्न
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| Group No. → | 1 | 2 | 13 | 14 | 15 | 16 | 17 | 18 |
| Period ↓ | ||||||||
| 2 | A | B | ||||||
| 3 | E | D | F | C |
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