Home
Class 12
CHEMISTRY
An element has successive ionization ent...

An element has successive ionization enthalpies as 940 (first),2080,3090,4140,7030,7870,16000 and 19500 kJ `mol^(-1)`. To which group of the periodic table does this element belong?

A

14

B

15

C

16

D

17

Text Solution

AI Generated Solution

The correct Answer is:
To determine the group of the periodic table to which the given element belongs based on its successive ionization enthalpies, we can follow these steps: ### Step 1: Analyze the Ionization Energies The given successive ionization enthalpies are: - 1st: 940 kJ/mol - 2nd: 2080 kJ/mol - 3rd: 3090 kJ/mol - 4th: 4140 kJ/mol - 5th: 7030 kJ/mol - 6th: 7870 kJ/mol - 7th: 16000 kJ/mol - 8th: 19500 kJ/mol ### Step 2: Identify the Large Jump Notice that there is a significant jump between the 6th and 7th ionization enthalpies (from 7870 kJ/mol to 16000 kJ/mol). This indicates that after removing the 6th electron, the next electron to be removed is from a much more stable electron configuration. ### Step 3: Relate to Electron Configuration The large increase in ionization energy suggests that the element has a stable electronic configuration after the removal of the first six electrons. In general, elements in Group 16 have the electronic configuration of ns²np⁴. - Removing the first electron (from ns²np⁴) gives ns²np³. - Removing the second electron gives ns²np². - Removing the third gives ns²np¹. - Removing the fourth gives ns² (which is stable). - Removing the fifth gives ns¹. - Removing the sixth gives a noble gas configuration (ns⁰). ### Step 4: Conclusion After the 6th ionization, the element reaches a noble gas configuration, which requires significantly more energy to remove an electron from a filled inner shell (1s²). This is consistent with the large jump in ionization energy observed. Thus, the element belongs to **Group 16** of the periodic table. ### Final Answer The element belongs to **Group 16** of the periodic table. ---
Promotional Banner

Topper's Solved these Questions

  • PERIODIC PROPERTIES

    VK JAISWAL ENGLISH|Exercise Level 3 (Passage Type)|89 Videos

  • PERIODIC PROPERTIES

    VK JAISWAL ENGLISH|Exercise ONE OR MORE ANSWERS IN/ARE CORRECT|98 Videos

  • p-BLOCK ELEMENTS

    VK JAISWAL ENGLISH|Exercise SUBJECTIVE PROBLEMS|35 Videos

  • QUALITATIVE INORGANIC ANALYSIS

    VK JAISWAL ENGLISH|Exercise SUBJECTIVE PROBLEMS|4 Videos

Similar Questions

Explore conceptually related problems

An element 'X' has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong.

A non-metal A which is the largest constituent of air, when heated with H2 in 1 : 3 ratio in the presence of catalyst (Fe) gives a gas B. 0n heating with O_(2) it gives an oxide C. If this oxide is passed into water in the presence of air, it gives an acid D which acts as a strong oxidising agent. (a) Identify A, B, C and D. (b) To which group of the periodic table does this non-metal belongs?

The first four ionization energies of an element are 738 kJ/mole, 1450 kJ/mol, 7700 kJ/mol and 11000 kJ/mol. Identify the periodic group to which this element belongs.

Element having atomic number 20 belongs to which group of periodic table.

What is group displacement law ? An element belonging to group 1 decay by beta^(c-)- emission. To which group of the periodic table the daughter element will belong ?

An element 'X' has atomic number 6. Another element 'Y' has 17 electrons in its neutral atom. (a) To which group of modern periodic table to 'X' and 'Y' belong ? (b) What type of bond will be found in the compound. When 'X' and 'Y' combine ? (c) Write the formula of this compound. State reason for your answer in each case.

Ionisation enthalpies of elements of second period are given below Ionisation enthalpy/k cal mol^(-1) , 520,899,801,1086,1402,1314, 1681, 2080. Match the correct enthalpy with the elements and complete the graph given in the figure. Also write symbols of elements with their atomic number.

(a) Write the name and symbol of group 17 element belonging to second period. (b) Write electronic configuration of K(19) . To which group of periodic table does it belongs ? (c) What are substitution reactions ? Give one example (d) What happens when acetic acid reacts with sodium bicarbonate ? Give the chemical reaction involved. (e) Why does carbon from covalent bonds ?

Complete the following crossword puzzle (Figure) Across (1) An element with atomic number 12 (3) Metal used in making cans and member of group 14 (4) A lustrous non-metal which has 7 electrons in its outermost shell Down (2) Highly reactive and soft metal which imparts yellow colour when subjected to flame and is kept in kerosene (5) The first element of second period (6) An element whihc is used in making flurescent bulbs and is second member of group 18 in the modern periodic table (7) A radioactive element which is the last member of halogen family (8) Metal which is an important constituent of steel and forms rust when exposed to moist air (9) The first metalloid in modern periodic table whose fibres are used in making bullet-proof vests

An element 'M' with electronic configuration (2,8,2) combines separately with (NO_(3))^(-),(SO_(4))^(2-) and (PO_(4))^(3-) radicals. Write the formula of the three compounds so formed . To which group and period of the Modern Periodic Table does the elements 'M' belong ? Will 'M' form covalent or ionic compounds ? Give reason to justify your answer.