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In Mendeleev's original periodic table, ...

In Mendeleev's original periodic table, there were six horixontal rows (called seried) further subdivided to give a total of `12`. In Mendeleev's modified periodic table, there are ________horizontal rows (called periods).

A

seven

B

eight

C

nine

D

ten

Text Solution

Verified by Experts

The correct Answer is:
A
These are numbered from `1` to `7`. Mendeleev called horizontal rows as series.
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  2. In Mendeleev's periodic table group VIII containselements.

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  3. In Mendeleev's original periodic table, there were six horixontal rows...

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  5. One especially farishted feature of Mendeleev's accomplishment was his...

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  6. Mendeleev's propdicted the properties of unknown elements.

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  7. Mebdeleev's periodic table has helped in correcting the doubtful atomi...

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  8. The position of hydrogen in Mendeleev's periodic table is not fixed bu...

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  9. In Mendeleev's table, although most of the elements were placed in the...

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  10. Since its birth in 1869, the Mendeleev periodic table has been discuss...

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  11. The empirical evolution of the periodic table reached its peak in 1913...

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  12. Which of the following gives a straight line?

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  13. Which of the following correctely describes Moseley's law?

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  14. Moden periodic law states that the properties of the elements are peri...

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  15. The physical and chemical properties of the elements denpend upton the...

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  16. The cause of periodicity in properties of the elements is the repetiti...

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  17. Which of the following numbers are called magic numbers?

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  18. The short form of the modern periodic table of the elements (also call...

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  19. In the modified Mendeleev's periodic table, the 18 vertical columns we...

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  20. In the short form of the modern periodic table, the period number corr...

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