Worksheets Class 11 Chemistry Classification of Elements and Periodicity in Properties

Students should refer to Worksheets Class 11 Chemistry Classification of Elements and Periodicity in Properties Chapter 3 provided below with important questions and answers. These important questions with solutions for Chapter 3 Classification of Elements and Periodicity in Properties have been prepared by expert teachers for Class 11 Chemistry based on the expected pattern of questions in the class 11 exams. We have provided Worksheets for Class 11 Chemistry for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.

Classification of Elements and Periodicity in Properties Worksheets Class 11 Chemistry

Question. The group number, number of valence electrons, and valency of an element with the atomic  number 15, respectively, are:
(a) 16, 5 and 2
(b) 15, 5 and 3
(c) 16, 6 and 3
(d) 15, 6 and 2   

Question. Which of the following has the maximum number of unpaired electrons?
(a) Mg²⁺
(b) Ti³⁺
(c) V³⁺
(d) Fe²⁺ 

Question. The element with highest second ionization energy is
(a) Cl
(b) S
(c) Na
(d) Mg  

Question. Which of the following has the highest boiling point?
(a) Ne
(b) Xe
(c) Ar
(d) Kr.  

Question. Which of the following statement is correct with respect to the property of elements with an increase in atomic number in the carbon family (group 14)
(a) Atomic size decrease
(b) Ionization energy increase
(c) Metallic character decrease
(d) Stability of +2 oxidation state increase   

Question. A sudden large jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration
(a) 1s², 2s²p⁶, 3s¹
(b) 1s², 2s²p⁶, 3s²p¹
(c) 1s², 2s²p⁶, 3s²
(d) 1s², 2s²p⁶, 3s²p² 

Question. The most electronegative element of the periodic table is
(a) Iodine
(b) Sulphur
(c) Oxygen
(d) Fluorine.   

Question. The group number, number of valence electrons, and valency of an element with the atomic  number 15, respectively, are:
(a) 16, 5 and 2
(b) 15, 5 and 3
(c) 16, 6 and 3
(d) 15, 6 and 2  

Question. The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Its reason is:
(a) Both are found together in nature
(b) Both have nearly the same size
(c) Both have similar electronic configuration
(d) The ratio of their charge and size (i.e. charge density) is nearly the same 

Question. Which of the following oxides is amphoteric in character?
(a) SnO₂
(b) CO₂
(c) SiO₂
(d) CaO