MCQs For NCERT Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties

Please refer to the MCQ Questions for Class 11 Chemistry Chapter 3 Classification of Elements and Periodicity in Properties with Answers. The following Classification of Elements and Periodicity in Properties Class 11 Chemistry MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 11. Our experts have designed MCQ Questions for Class 11 Chemistry with Answers for all chapters in your NCERT Class 11 Chemistry book.

Classification of Elements and Periodicity in Properties Class 11 MCQ Questions with Answers

See below Classification of Elements and Periodicity in Properties Class 11 Chemistry MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. Which of the following elements has the maximum electron affinity?
(a) I
(b) Br
(c) Cl
(d) F

Question. The first ionization potentials (eV) of Be and B respectively are
(a) 8.29, 8.29
(b) 9.32, 9.32
(c) 8.29, 9.32
(d) 9.32, 8.29

Question. Which one of the following is correct order of the size of iodine species?
(a) I⁺ > I^– > I
(b) I^– > I > I⁺
(c) I > I^– > I⁺
(d) I > I⁺ > I^– 

Question. Which of the following ions is the largest in size?
(a) K⁺
(b) Ca²⁺
(c) Cl^–
(d) S^2– 

Question. The ions O^2–, F^–, Na⁺, Mg²⁺ and Al³⁺ are isoelectronic. Their ionic radii show
(a) a significant increase from O^2– to Al³⁺
(b) a significant decrease from O^2– to Al³⁺
(c) an increase from O^2– to F^– and then decrease from Na+ to Al³⁺
(d) a decrease from O^2– to F^– and then increase from Na+ to Al³⁺. 

Question. Which of the following order is wrong?
(a) NH₃ < PH₃ < AsH₃ – acidic
(b) Li < Be < B < C – 1^st IP
(c) Al₂O₃ < MgO < Na₂O < K₂O – basic
(d) Li⁺ < Na⁺ < K⁺ < Cs⁺ – ionic radius. 

Question. Which of the following has the smallest size?
(a) Al³⁺
(b) F^–
(c) Na⁺
(d) Mg²⁺ 

Question. Na⁺, Mg²⁺, Al³⁺ and Si⁴⁺ are isoelectronic. The order of their ionic size is
(a) Na+ > Mg²⁺ < Al³⁺ < Si⁴⁺
(b) Na+ < Mg²⁺ > Al³⁺ > Si⁴⁺
(c) Na+ > Mg²⁺ > Al³⁺ > Si⁴⁺
(d) Na+ < Mg²⁺ > Al³⁺ < Si⁴⁺

Question. In the periodic table from left to right in a period, the atomic volume
(a) decreases
(b) increases
(c) remains same
(d) first decreases then increases. 

Question. Which electronic configuration of an element has abnormally high difference between second and third ionization energy?
(a) 1s², 2s², 2p⁶, 3s¹
(b) 1s², 2s², 2p⁶, 3s¹, 3p¹
(c) 1s², 2s², 2p⁶, 3s², 3p²
(d) 1s², 2s², 2p⁶, 3s² 

Question. One of the characteristic properties of non-metals is that they
(a) are reducing agents
(b) form basic oxides
(c) form cations by electron gain
(d) are electronegative. 

Question. In the periodic table, with the increase in atomic number, the metallic character of an element
(a) decreases in a period and increases in a group
(b) increases in a period and decreases in a group
(c) increases both in a period and the group
(d) decreases in a period and the group. 

Question. Which of the following atoms will have the smallest size?
(a) Mg
(b) Na
(c) Be
(d) Li

Question. Which one of the following has minimum value of cation/anion ratio?
(a) NaCl
(b) KCl
(c) MgCl₂
(d) CaF₂

Question. Among the following oxides, the one which is most basic is
(a) ZnO
(b) MgO
(c) Al₂O₃
(d) N₂O₅ 

Question. Which of the following has largest size?
(a) Na
(b) Na⁺
(c) Na^–
(d) Can’t be predicted.

Question. Which of the following sets has strongest tendency to form anions?
(a) Ga, Ni, Tl
(b) Na, Mg, Al
(c) N, O, F
(d) V, Cr, Mn 

Question. Elements of which of the following groups will form anions most readily?
(a) Oxygen family
(b) Nitrogen family
(c) Halogens
(d) Alkali metals

Question. The electronic configuration of four elements are given below. Which elements does not belong to the same family as others?
(a) [Xe]4 f ¹⁴5d¹⁰ls²
(b) [Kr]4d¹⁰5s²
(c) [Ne]3s²3p5
(d) [Ar] 3d¹⁰ 4s²

Question. The elements with atomic numbers 9, 17, 35, 53 and 85 belong to
(a) alkali metals
(b) alkaline earth metals
(c) halogens
(d) noble gases

Question. Eka-aluminium and Eka-silicon are known as
(a) gallium and germanium
(b) aluminium and silicon
(c) iron and sulphur
(d) manganese and magnesium

Question. What is the atomic number of the next halogen if discovered?
(a) 85
(b) 117
(c) 167
(d) 104

Question. Which form coloured salts?
(a) Non-metals
(b) Metals
(c) p-block elements
(d) Transitional elements

Question. The ionic radii of Na+, F–, O2–, N3– follow the order
(a) O^2– > F^– > Na⁺ > N^3–
(b) N^3– > Na⁺ > F^– > O^2–
(c) N^3– > O^2– > F^– > Na⁺
(d) Na⁺ > F^– > O^2– > N^3–

Question. The electronic configuration of an element is 1s² 2s² 2 p⁶ 3s² 3p³ . The atomic number and the group number of the element ‘X’ which is just below the above element in the eriodic table are respectively
(a) 23 and 5
(b) 23 and 15
(c) 33 and 15
(d) 33 and 5

Question. In which of the following process highest energy is absorbed?
(a) Cu → Cu⁺
(b) Br→ Br^–
(c) I → I^–
(d) Li → Li⁺

Question. Which ionisation potential (IP) in the following equations involves the greatest amount of energy?
(a) Na → Na⁺ + e^–
(b) K⁺ → K²⁺ + e^–
(c) C²⁺ → C³⁺ + e^–
(d) Ca⁺ → Ca²⁺ + e^–

Question. Element with electronic configuration 1s2 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s2 4p⁶ 4d¹⁰ 5s2 5p³ belongs to the following group of the periodic table
(a) 2nd
(b) 5th
(c) 3rd
(d) 7th

Question. The long form of periodic table consists of
(a) seven periods and eight groups
(b) seven periods and eighteen groups
(c) eight periods and eighteen groups
(d) eighteen periods and eight groups

Question. All the members in a group in long form of periodic table have the same
(a) valence
(b) number of valence electrons
(c) chemical properties
(d) All of the above

Question. The period number in the periodic table corresponds to the …A… principal quantum number (n) of the elements. Here, A refers to
(a) lowest
(b) highest
(c) middle
(d) None of these

Question. The symbol and IUPAC name for the element with atomic number 120, respectively are
(a) Ubn and unbinilium
(b) Ubn and unbiunium
(c) Ubn and unnibium
(d) Ubn and unnilium

Question. Elements of which group form anions most readily?
(a) Oxygen family
(b) Nitrogen family
(c) Halogens
(d) Alkali metals

Question. Element having atomic no. of 56 belongs to which of the following block of periodic table?
(a) p- block
(b) d-block
(c) f- block
(d) s-block

Question. An atom has electronic configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d³ 4s², you will place it in which group?
(a) Fifth
(b) Fifteenth
(c) Second
(d) Third

Question. Which of the following is not an actinoid ?
(a) Curium (Z = 96)
(b) Californium (Z = 98)
(c) Uranium (Z = 92)
(d) Terbium (Z = 65)

Question. The period number in the long form of the periodic table is equal to
(a) magnetic quantum number of any element of the period.
(b) atomic number of any element of the period.
(c) maximum Principal quantum number of any element of the period.
(d) maximum Azimuthal quantum number of any elementof the period. 

Question. The elements with atomic numbers 9, 17, 35, 53 and 85 belong to
(a) alkali metals
(b) alkaline earth metals
(c) halogens
(d) noble gases

Question. Which of the following pairs has both members from the same period of the periodic table.
(a) Na – Ca
(b) Na – Cl
(c) Ca – Cl
(d) Cl – Br

Question. In the modern periodic table one of the following does not have appropriate position –
(a) transition elements
(b) inert gases
(c) inner transition elements
(d) halogens

Question. If the atomic number of an element is 33, it will be placed in the periodic table in the
(a) First group
(b) Third group
(c) Fifth group
(d) Seventh group.

Question. The elements which are characterized by the outer electronic configuration ns1 to ns2 np6 are collectively called
(a) Transition elements
(b) Representative elements
(c) Lanthanides
(d) Inner transition elements

Question. Which group of the periodic table contains coinage metal ?
(a) IIA
(b) IB
(c) IA
(d) None of these

Question. The only non-metal which is liquid at ordinary temperature is
(a) Hg
(b) Br₂
(c) NH₃
(d) None of these

Question. Which is a metalloid?
(a) Pb
(b) Sb
(c) Bi
(d) Zn

Question. In the long form of the periodic table all the non-metals are placed in
(a) s-block
(b) p-block
(c) f-block
(d) d-block

Question. Arrange the following elements in the order of their increasing non-metallic character
Li, O, C, Be, F B
(a) F < O < C < Be < Li
(b) Li < Be < C < O< F
(c) F < O < C < Be < Li
(d) F < O < Be < C < Li

Question. f-block elements are called inner transition elements because
(a) they have properties similar to those of transition elements
(b) they exist in between transition elements
(c) the last electron enters into the f-orbital of the penultimate shell
(d) the last electron enters into any orbital of penultimate shell

Question. Which of the following is non-metallic ?
(a) B
(b) Be
(c) Mg
(d) Al

Question. Which is the correct order of ionic sizes (At. No. : Ce = 58, Sn = 50, Yb = 70 and Lu = 71) ?
(a) Ce > Sn > Yb > Lu
(b) Sn > Ce > Yb > Lu
(c) Lu > Yb > Sn > Ce
(d) Sn > Yb > Ce > Lu