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Write the atomic number of the element p...

Write the atomic number of the element present in the third period and seventeenth group of the periodic table.

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Since it belongs to 3rd period, it will have outershell as `n =3.` It configurration would be `[Ne]3e ^(2) 3p^(4).` So its atomic number `= 16.` It is sulphur.
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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -CONCEPTUAL QUESTIONS
  1. In terms of period and group where would you locate the element with Z...

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  2. The elements Z = 117 and 120 have not yet have been discovered, In whi...

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  3. Write the atomic number of the element present in the third period and...

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  4. Give the general electronic configurations of (i) p-block " " (ii)...

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  5. An element X with Z = 112 has been recently discovered. What is the el...

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  6. What would be the IUPAC name and symbol for the element with atomic no...

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  7. What is the name and symbol of the element with atomic number 112?

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  8. What is the name and symbol of the element with atomic number 112?

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  9. What is the significance of the terms-'isolated gaseous atom' and 'gro...

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  10. Energy of an electron in the ground state of the hydrogen atom is -2.1...

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  11. The electron gain enthalpies of halogens are as given below: F =- 33...

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  12. Magnesium loses electrons successively to form Mg^(+),Mg^(2+)andMg^(3+...

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  13. Out of Na and Mg which has higher second ionisation energy?

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  14. Which is the smallest among Na^(o+),Mg^(2+),Al^(3+), and why?

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  15. Arrange the following in the order of increasing ionization potential

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  16. The electronic configuration for the following neutral atoms are given...

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  17. How would you explain the fact that the first ionisation enthalpy of s...

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  18. Among the second period elements the actual ionisation enthalpies are ...

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  19. Identify the best choice in the list: (i) Largest ionic size :Mg^(2+...

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  20. Arrange the following in the decreasing negative electron gain enthalp...

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