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The first (IP1) and the second (IP2) ion...

The first `(IP_1)` and the second `(IP_2)` ionisation potential (kJ mol 1) of a few elements designed by roman numerals are shown below

Identify the element which are likely to be a noble gas and a reactive metal respectively

A

I and II

B

II and III

C

I and IV

D

II and IV

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The correct Answer is:
A
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The first (Delta_iH_1) and the second (Delta_iH_2) ionisation enthalpies in "kJmol"^(-1) and the electron gain enthalpy (Delta_(eg)H) in "kJmol"^(-1) of a few elements are given below: {:("Elements",Delta_iH_1,Delta_iH_2,Delta_(eg)H),("(P)",520,7300,-60),("(Q)",419,3051,-48),("(R)",1681,3374,-328),("(S)",1008,1846,-295),("(T)",2372,5251,+48),("(U)",738,1451,-40):} Which one of the above elements is least reactive?

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The first ionisation potentials of four consecutive elements present in the second period of the periodic table are 8.3, 11.3, 14.5 and 13.6 eV respectively. Which one of the following is the first ionisation potential (in eV) of nitrogen ?

Two elements X and Y belong to Groups 1 and 2 respectively in the same period of the periodic Table .Compare these elements with respect to : their ionisation energy and metallic character .

Numerous forms of the periodic table have been devised from time to time. A modern version which is most convenient and widely used is the long or extended from of periodic table. The aufbau principle and the electronic configuration of atoms provide a theoretical foundation for the periodic classification. The horizontal rows are called periods. There are altogether seven periods. The first period consists of 2 elements. The subsequent periods consists of 8, 8,18, 18 and 32 elements respectively. The seventh period is incomplete and like the sixth period would have maximum of 32 elements. Elements having similar outer electronic configurations in their atoms are grouped in vertical columns. These are referred to as groups or families. According to the recommendations of IUPAC, the groups are numbered 1 to 18 replacing the older notation of groups 0, IA, IIA, ....VIIA, VIII, IB.....VIIB. Each successive period in the periodic table is associated with the filling up next higher principal energy level following aufbau sequence. The number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled. All the elements are classified into four blocks, i.e., s-block, p-block, d-block, and f-block depending on the type of atomic orbitals that are being filled with electrons. What is the position of the element in the periodic table satisfying the electronic configuration (n-1)d^1 ns^2 for n=4 ?

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AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -2B
  1. Consider the following changes a) M((g))^(+2) rarr M((g))^(+3) + e^...

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  2. The correct order of IP2 , values among F, Na, Mg and Al is

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  3. The first (IP1) and the second (IP2) ionisation potential (kJ mol 1) o...

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  4. The ionisation energies of Lithium and Sodium are 520kJ Mol^(-1) and 4...

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  5. Successive ionisation potentials of an element M are 8.3, 25.1, 37.9, ...

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  6. The first ionisation potentials of four consecutive elements present i...

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  7. H-H, X-X and H-X bond energies are 104 Kcal/mole 60Kcal/mole and 101Kc...

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  8. The ionisation energy and electron affinity of an element are 13.0ev a...

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  9. If the ionisation energy and electron affinity of an element are 275 a...

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  10. The elements which show both positive and negative oxidation states. i...

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  11. Match the following two lists given below in view of higest oxidation ...

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  12. Strongest reducing agent and strongest oxidising agent are respectivel...

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  13. Which of the following statement is correct

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  14. The radius of La^(3+) (Z=57) is 1.06A^(@). Which one of the following ...

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  15. (A): According to Mendeleeff atomic weight of 'Be' is 9.1 but experime...

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  16. Chloride of an element A gave a neutral solution in water. In the peri...

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  17. Which one of the following relations is correct with respect to first ...

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  18. The incorrect statement among the following is

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  19. The decreasing order of second ionisation potential of K, Ca, Ba is

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  20. For four elements the IP2 curve is shown. In the graph the elements re...

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