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How many periods and groups are there in...

How many periods and groups are there in Modern Periodic Table ?

A

8 groups and 7 periods

B

7 periods and 18 groups

C

7 groups and 18 periods

D

7 groups and 15 periods

Text Solution

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The correct Answer is:
B
In mordern periodic table, there are 7 periods and 18 groups.
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ICSE-SAMPLE PAPER 1-QUESTIONS
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  10. What is the correct order of atomic size?

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  11. How the ionisation energy of the elements changes on moving top to bot...

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  12. Which of the following elements has highest ionisation energy?

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  16. Identify the odd one :

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