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If the element with atomic number 18 is ...

If the element with atomic number 18 is a noble gas, to which group do you expect the elements with atomic numbers 17 and 19 belong?

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Group 17 and group 1 respectively
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ICSE-PERIODIC PROPERTIES OF ELEMENTS -QUESTIONS FOR PRACTICE ON EXAMINATION PATTERN (SECTION II)
  1. Look at the atomic radii of some elements of the second period and ans...

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  2. Name one other element for each which is in the same group as (i) c...

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  3. If the element with atomic number 18 is a noble gas, to which group do...

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  4. The atomic number of helium is 2 and the atomic number of lithium is 3...

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  5. From the electronic configurations Na (2, 8, 1), Mg (2, 8, 2) and Al (...

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  6. From the electronic configurations Na (2, 8, 1), Mg (2, 8, 2) and Al (...

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  7. From the electronic configurations Na (2, 8, 1), Mg (2, 8, 2) and Al (...

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  8. From the electronic configurations Na (2, 8, 1), Mg (2, 8, 2) and Al (...

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  9. From the electronic configurations Na (2, 8, 1), Mg (2, 8, 2) and Al (...

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  10. An element belongs to group 17 and period 3 of the periodic table. Wri...

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  11. An element belongs to group 17 and period 3 of the periodic table. Wri...

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  12. An element belongs to group 17 and period 3 of the periodic table. Wri...

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  13. An element belongs to group 17 and period 3 of the periodic table. Wri...

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  14. Complete the given table :

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  15. An element X of group 15 and period 2 exists as diatomic molecule. It ...

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  16. An element X of group 15 and period 2 exists as diatomic molecule. It ...

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  17. An element X of group 15 and period 2 exists as diatomic molecule. It ...

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  18. An element X of group 15 and period 2 exists as diatomic molecule. It ...

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  19. What is the total number of covalent bonds in a molecule of ammonia?

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  20. In group 1 of the periodic table three elements X, Y and Z have atomic...

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