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Topic Question Set

Q 11 :

Given below are two statements :

Statement (I): The first ionization energy of Pb is greater than that of Sn.

Statement (II): The first ionization energy of Ge is greater than that of Si.

In the light of the above statements, choose the correct answer from the options given below :                [2025]

  • Statement I is true but Statement II is false

     

  • Both Statement I and Statement II are false

     

  • Statement I is false but Statement II is true

     

  • Both Statement I and Statement II are true

     

(1)

 

Q 12 :

First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family:     [2025]

  • 1012 kJ mol-1

     

  • 1402 kJ mol-1

     

  • 834 kJ mol-1

     

  • 947 kJ mol-1

     

(1)

 

Q 13 :

The property/properties that show irregularity in the first four elements of group-17 are:

(A) Covalent radius

(B) Electron affinity

(C) Ionic radius

(D) First ionization energy

Choose the correct answer from the options given below:                            [2025]

  • B and D only

     

  • A and C only

     

  • B only

     

  • A, B, C and D

     

(3)

 

Q 14 :

Match the LIST-I with LIST-II.                          [2025]

  List - I   List - II
  (Family)   (Symbol of Element)
A. Pnictogen (group 15) I. Ts
B. Chalcogen II. Og
C. Halogen III. Lv
D. Noble gas IV. Mc

 

Choose the correct answer from the options given below:

  • A-IV, B-I, C-II, D-III

     

  • A-IV, B-III, C-I, D-II

     

  • A-III, B-I, C-IV, D-II

     

  • A-II, B-III, C-IV, D-I

     

(2)

(A) Pnictogen ⇒ Mc (Moscovium), Atomic No. = 115

(B) Chalcogen ⇒ Lv (Livermorium), Atomic No. = 116

(C) Halogen ⇒ Ts (Tennessine), Atomic No. = 117

(D) Noble gas ⇒ Og (Oganesson), Atomic No. = 118