Fully solved Classification of Elements and Periodicity in Properties MCQ Test Series 1 exclusively helpful for preparing all Medical Entrance Exams, Dental Entrance Exams, Engineering Entrance Exams; Admission Tests for MBBS, BDS, B Tech and other courses.
Chemistry >> Classification of Elements, Periodic Table, Periodicity in Properties
Classification of Elements and Periodicity in Properties MCQ For NEET(Syllabus):
Genesis of Periodic Classification, Earlier Attempts of Classification of Elements, Mendeleev’s Periodic Law and Original Periodic Table, Modern Periodic Law and Long Form of Periodic Table, (Modified Form of Mendeleev’s Periodic Table), Naming the Elements, Periodic Table of Elements (Long Form representing Electron Configurations), Position of an Element on the Basis of Electronic Configuration, Nomenclature of Elements with Atomic Number > 100, Electronic Configurations of Elements and the Periodic Table, Periodic Trends in Properties of Elements or Atomic Properties or Periodic Properties of Elements, The Screening Effects or Shielding Effect, Effective Nuclear Charge, Ionisation Enthalpy or Ionisation Potential, Atomic Radii, Ionic Radii, Ionization Enthalpy, Electron Gain Enthalpy, Electron Affinity, Electronegativity, Valence, Electronic Configurations and Types of Elements: s, p, f-Blocks
Classification of Elements, Periodic Table, Periodicity in Properties – MCQ Test Series for all Medical, Engineering Entrance Exams and Admission Tests
Last Minute Preparation: NEET Chemistry MCQs on Periodic Classification of Elements
During your preparation for NEET, you must have understood that chemistry is a relatively easier subject to learn when compared to other subjects like Physics and Biology. Moreover, it is also a better scorer than both biology and physics. Chemistry syllabus for NEET comprises of chapters that are more factual rather than conceptual.
By solving these Most Asked MCQs on periodic table, you will feel a lot more confident and increase your understanding of this chapter.
- Q.1. Periodic classification of elements is used to examine the
(a) periodic trends in physical properties of elements
(b) periodic trends in chemical properties of elements
(c) Both (a) and (b)
(d) None of the above - Q.2. Increasing order of electro negativity is
(a) Bi < P < S < Cl
(b) P < Bi < S < Cl
(c) S < Bi < P < Cl
(d) Cl < S < Bi < P - Q.3. How many elements are there in 6th period of periodic table?
(a) 18 (b) 8
(c) 30 (d) 32 - Q.4. 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 - Q.5. 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 Answer - Q.6. The electronic configuration of halogen is
(a) ns² np6
(b) ns² np3
(c) ns² np5
(d) ns² - Q.7. Which of the following is non-metallic ?
(a) B (b) Be
(c) Mg (d) Al - Q.8. The order of increasing sizes of atomic radii among the
elements O, S, Se and As is :
(a) As < S < O < Se (b) Se < S < As < O
(c) O < S < As < Se (d) O < S < Se < As - Q.9. The element with atomic number 35 belongs to
(a) d – Block
(b) f – Block
(c) p – Block
(d) s – Block - Q.10. Why the size of an anion is larger than the parent atom?
(a) Due to increased repulsion among the electrons.
(b) Due to decrease in effective nuclear charge.
(c) Due to increased in effective nuclear charge.
(d) Both (a) and (b)
Solutions of Practice Questions (No. 1 – 10)
- (c) Periodic classification of elements follow a logical consequence of electronic configuration of atoms which is used to examine the physical and chemical properties of the elements.
- (a) Bi < P < S < Cl
Explanation:
Increasing order of electro negativity is Bi < P < S < Cl. - (d) 6th period consists of 32 elements.
- (b) Na and Cl both belongs to III period.
- (d) The ratio of their charge and size (i.e. charge density) is nearly the same<br. The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups because of diagonal relationship.
- Answer: (c) ns² np5
Explanation:
Halogens has 7 electrons in his valance shell (ns²np5) - (a) Metallic character decreases down group and increases along a period.
- (c) On moving down in a group atomic radii increases due to successive addition of extra shell hence
O < S < Se Further As is in group 15 having one less electron in its p orbital hence have higher atomic radii than group 16 elements.
i.e., O < S < Se < As - (c) p – Block
The electronic configuration of element with atomic number 35 is [Ar]3d104s2 4p5. The valence electron belongs to p block. Therefore, it is a p-block element. - (d) The size of an anion will be larger than that of the parent atom because the addition of one or more electron(s) would result in increased repulsion among the electrons and a decrease in effective nuclear charge.
- Q.11. The correct order of first ionization potential among following elements, Be, B, C, N and O is
(a) B < Be < C < O < N
(b) B < Be < C < N < O
(c) Be < B < C < N < O
(d) Be < B < C < O < N - Q.12. Which of the following properties generally decreases along a period?
(a) Ionization Energy
(b) Metallic Character
(c) Electron Affinity
(d) Valency.Answer - Q.13. The electron affinity for the inert gases is –
(a) zero (b) high
(c) negative (d) positive - Q.14. On the Pauling’s electronegativity scale the element next to F is
(a) N
(b) Cl
(c) O
(d) Ne. - Q.15. 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 - Q.16. 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 - Q.17. Diagonal relationship is shown by
(a) All elements with their diagonally downward elements towards right
(b) Most of the elements of second period
(c) All 3d series elements
(d) None of the above - Q.18. Which of the following oxides is amphoteric in character?
(a) SnO2
(b) CO2
(c) SiO2
(d) CaO - Q.19. In the modern periodic table, the period indicates the value of:
(a) Atomic Number
(b) Atomic Mass
(c) Principal Quantum Number
(d) Azimuthal Quantum Number - Q.20. Which of the following sequence correctly represents the decreasing acidic nature of oxides ?
(a) Li2O > BeO > B2O3 > CO2 > N2O3
(b) N2O3 > CO2 > B2O3 > BeO > Li2O
(c) CO2 > N2O3 > B2O3 > BeO > Li2O
(d) B2O3 > CO2 > N2O3 > Li2O > BeO
Solutions of Practice Questions Set 1 (No. 11- 20)
- 11.(a) B < Be < C < O < N
- 12.(b) Metallic Character
The IE, EA increases along the period. The valency initially increases then decreases. The metallic character decreases along the period. - 13.(b) O < S < F < Cl
- 14.(c) O
Explanation:
Pauling explained electronegativity as the power of an atom in a molecule to attract electrons towards it. When we analyse the trend in periodic table, we can see that the degree of electronegativity decreases while going down the groups, while it increases across the periods. In the case of a covalent bond, based on the bond energies, Pauling calculated the differences in electronegativity between atoms in the bond and assigned a value of 4 to fluorine, which is the most electronegative element, and others were calculated with respect to that value. Hence, on paulings scale, the element next to fluorine is Oxygen. - 15.(c) s and p – Block
Explanation: Elements in which all the inner shells are complete but outer shell is incomplete is known as representative elements i.e. Those elements which have less than 8 electrons in outermost shell are representative. s and p block elements except inert gas is known as representative elements. - 16.(b) 15, 5 and 3
Explanation:
Atomic number (Z) =15 =P → [Ne] 3s² 3p³ Phosphorus belongs to 15th group Number of valence electrons 3s²3p³ = 5 and valency = 3 in ground state. - 17.(d)
- 18.(a) SnO2
Explanation:
CaO is basic; CO2 is acidic; SiO2 is weakly acidic. SnO2 is amphoteric. - 19.(c) Principal Quantum Number
The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic number (number of protons in the nucleus), electron configurations, and recurring chemical properties. The value of the principal quantum number (n) for the outermost shell or the valence shell indicates a period in the Modern periodic table. - 20.(b) On passing from left to right in a period acidic character of the normal oxides of the elements increases with increase in electronegativity
- Q.21. Arrange S, O and Se in ascending order of electron affinity
(a) Se < S < O
(b) Se < O < S
(c) S < O < Se
(d) S < Se < O - Q.22. which of the following elements are found in pitch blende?
(a) Actinium and protoactinium
(b) Neptunium and plutonium
(c) Actinium only
(d) Both (a) and (b) - Q.23. In the modern periodic table , the period indicates the value of:
(a) Atomic Number
(b) Atomic Mass
(c) Principal Quantum Number
(d) Azimuthal Quantum Number - Q.24. The electronic configuration of an element is 1s², 2s² 2p6, 3s² 3p³. What is the atomic number of the element which is just below the above element in the periodic table
(a) 31
(b) 34
(c) 33
(d) 49 - Q.25. The reduction in atomic size with increase in atomic number is a characteristic of elements of-
(a) d−block
(b) f−block
(c) Radioactive series
(d) High atomic masses - Q.26. The number of elements in the 5th period of the periodic table is
(a) 3
(b) 9
(c) 8
(d) 18 - Q.27. Which of the following forms the most stable gaseous negative ion?
(a) F
(b) Cl
(c) Br
(d) I - Q.28. On the Pauling’s electro negativity scale the element next to F is
(a) N
(b) Cl
(c) O
(d) Ne - Q.29. The element californium belongs to a family of :
(a) Alkali metal family
(b) Actinide series
(c) Alkaline earth family
(d) Lanthanide series - Q.30. In the long form of the periodic table, the valence shell electronic configuration of 5s²5p4 corresponds to the element present in:
(a) Group 16 and period 6
(b) Group 17 and period 6
(c) Group 16 and period 5
(d) Group 17 and period 5Answer
Solutions of Practice Questions Set 1 (No. 21 – 30)
- 21.(a) Se < S < O
Explanation:
Correct order of electron affinity is Se < S < O. In a group electron affinity decreases with increase in atomic number. - 22.(d) Neptunium and plutonium like actinium and protoactinium are also found in pitch.
- 23.(c) Principal Quantum Number
Explanation:
The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic number (number of protons in the nucleus), electron configurations, and recurring chemical properties.
The value of the principal quantum number (n) for the outermost shell or the valence shell indicates a period in the Modern periodic table. Classification of Elements and Periodicity in Properties NEET MCQ Ofline Mock PDF - 24.(c) 33
Explanation:
33−1s²2s²2p63s²3p63d104s²4p³ - 25.(b) f−block
Explanation:
The reduction in atomic size with increase in atomic number is a characteristic of elements of f- block. It is known as lanthanoid contraction and actinoid contraction. This is due to poor shielding of electrons present in f subshell. - 26.(d) 18
Explanation:
While filling 5th shell according to Aufbau principle 5s, 5p, 4d filled so 2 + 6 + 10 = 18 electrons or elements are present in 5th shell. Further we start filling the 4d orbital which can take 10 electrons. So in the 4th principal quantum energy states, we can fill 18 electrons. Thus 5th period has 18 elements. - 27.(b) Cl
Explanation:
The element which forms the most stable gaseous negative ion is fluorine. - 28.(c) O
Explanation:
Pauling explained electro negativity as the power of an atom in a molecule to attract electrons towards it. When we analyse the trend in periodic table, we can see that the degree of electro negativity decreases while going down the groups, while it increases across the periods. In the case of a covalent bond, based on the bond energies, Pauling calculated the differences in electro negativity between atoms in the bond and assigned a value of 4 to fluorine, which is the most electro negative element, and others were calculated with respect to that value. Hence, on paulings scale, the element next to fluorine is Oxygen. Classification of Elements and Periodicity in Properties NEET MCQ Ofline Mock PDF - 29.(b) Actinide series
Explanation:
Atomic number of californium is 98 and its electronic configuration is
Rn86 7s² 5f10
so it is a f-block element and as it is in 7th period, it is a part of actinide series. - 30.Answer: (c) Group 16 and period 5
Explanation:
Tellurium (Te) has 5s²5p4 valence shell configuration. It belongs to group 16 and present in period 5 of the periodic table.
Question Bank Of Periodic Table – Download Now
Classification of Elements and Periodicity in Properties NEET MCQ Ofline Mock PDF 1
Classification of Elements and Periodicity in Properties NEET MCQ Ofline Mock PDF 2
Classification of Elements and Periodicity in Properties NEET MCQ Ofline Mock PDF 3
Classification of Elements and Periodicity in Properties NEET MCQ Ofline Mock PDF 4
Classification of Elements and Periodicity in Properties NEET MCQ Ofline Mock PDF 5
So, from the above most asked MCQs on Classification of Elements and Periodicity in Properties, you can have the idea of what type of questions related to periodic table can be asked in NEET. Once you understand the question pattern, you can prepare the topic as well as the chapter.
You should opt for mock tests to have clear concepts of NEET chemistry MCQ on periodic classification of elements and also improve your accuracy.
Key Word
- Question Bank for NEET Chemistry Classification of Elements and Periodicity in Properties
- NEET Chemistry MCQs on Periodic Classification of Elements
- MCQs on Periodic Classification of Elements
- UNIT 3 CLASSIFICATION OF ELEMENTS AND PERIODICITY MCQ
- Classification of Elements and Periodicity in Properties NEET MCQ
