Please refer to Assignments Class 11 Chemistry Classification of Elements and Periodicity in Properties Chapter 3 with solved questions and answers. We have provided Class 11 Chemistry Assignments for all chapters on our website. These problems and solutions for Chapter 3 Classification of Elements and Periodicity in Properties Class 11 Chemistry have been prepared as per the latest syllabus and books issued for the current academic year. Learn these solved important questions to get more marks in your class tests and examinations.
Classification of Elements and Periodicity in Properties Assignments Class 11 Chemistry
Question. Increasing order of electronegativity is
(a) Bi < P < S < Cl
(b) P < Bi < S < Cl
(c) S < Bi < P < Cl
(d) Cl < S < Bi < P
Answer
A
Question. The elements which occupy the peaks of ionisation energy curve, are
(a) Na, K, Rb, Cs
(b) Na, Mg, Cl, I
(c) Cl, Br, I, F
(d) He, Ne, Ar, Kr
Answer
D
Question. In the third period of the Periodic Table the element having smallest size is
(a) Na
(b) Ar
(c) Cl
(d) Si
Answer
B
Question. According to the periodic law of elements, the variation in properties of elements is related to their
(a) nuclear neutron – proton number ratios
(b) atomic masses
(c) nuclear masses
(d) atomic numbers
Answer
D
Question. Which one of the following groupings represents a collection of isoelectronic species? (At. nos: Cs-55, Br-35)
(a) Na+, Ca2+, Mg2+
(b) N3-, F–, Na+
(c) Be, Al3+, Cl–
(d) Ca2+, Cs+, Br
Answer
B
Question. In the periodic table, the element with atomic number 16 will be placed in the group
(a) Third
(b) Fourth
(c) Fifth
(d) Sixth
Answer
D
Question. Which pair of elements belongs to same group?
(a) Elements with atomic no. 17 and 38
(b) Elements with atomic no. 20 and 40
(c) Elements with atomic no. 17 and 53
(d) Elements with atomic no. 11 and 33
Answer
C
Question. Which of the following properties generally decreases along a period?
(a) Ionization Energy
(b) Metallic Character
(c) Electron Affinity
(d) Valency.
Answer
B
Question. The d-block elements consists mostly of
(a) Monovalent metals
(b) All non-metals
(c) Elements which generally form stoichiometric metal oxide
(d) Many metals with catalytic properties
Answer
D
Question. Representative elements are those which belong to
(a) p and d – Block
(b) s and d – Block
(c) s and p – Block
(d) s and f – Block
Answer
C
