The chemistry of lithium is very similar to that of magnesium even though they are placed in different groups. Illustrate by taking examples of transition elements and non-transition elements that oxidation states of elements are largely based on electronic configuration. (a) Ionization Energy Answer: (b) Cl 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. (ii) 20 moles of … We have provided Equilibrium Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well. Those elements impart colour to the flame on heating in it, the atoms of which require low energy for the ionisation (i.e., absorb energy in the visible region of spectrum). Students can practice the NCERT MCQ Questions for Class 10 Science Chapter 3 Metals and Non-Metals with Answers Pdf free download is available here. The element with atomic number 35 belongs to Explanation: Hence, on paulings scale, the element next to fluorine is Oxygen. (d) Group 17 and period 5. It is known as lanthanoid contraction and actinoid contraction. MCQ Questions for Class 10 Science with Answers are prepared as per the Latest Exam Pattern. (d) ns². Halogens has 7 electrons in his valance shell (ns²np5). (b) f – Block Revise all the concepts easily by taking help from the MCQ Questions for Class 10 Science with … charge density) is nearly the same. Which of the following oxides is amphoteric in character? Explain each property by giving two examples and also write the reactions of these oxides with water. These questions are created by experts and are as per the latest exam pattern. Hence, on paulings scale, the element next to fluorine is Oxygen. Atomic number (Z) =15 =P → [Ne] 3s² 3p³ Explanation: The value of the principal quantum number (n) for the outermost shell or the valence shell indicates a period in the Modern periodic table. It is compulsory for those who choose the science group. (d) Azimuthal Quantum Number. (c) Principal Quantum Number (a) Bi < P < S < Cl In accordance with the Arfbau principle, the seven periods (1 to 7) have 2, 8, 8, 18, 18, 32 and 32 elements respectively. Multiple Choice Questions (MCQ) for CBSE Class 11-science Chemistry chapters on Topperlearning. (c) s and p – Block (c) SiO2 Which of the following sequences contain atomic numbers of only representative elements? (d) Valency. Question 1. What is the atomic number of the element which is just below the above element in the periodic table These MCQ's are extremely critical for all CBSE students to score better marks. Each period begins with the filling of a new energy shell. Check the below NCERT MCQ Questions for Class 11 Chemistry Chapter 1 Some Basic Concepts of Chemistry with Answers Pdf free download. The IE, EA increases along the period. Question 3. Answer: (c) p – Block MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. The valence electron belongs to p block. (d) The electronic configuration of the element which is just above the element with atomic number 43 in the same group is ________. MCQs on Organic Chemistry: MCQs on P Block Elements: MCQs on States Of Matter: (b) Both have nearly the same size Choose the correct option. All educational material on the website has been prepared by the best teachers having more than 20 years of teaching experience in various schools. (c) Br Candidates can download NCERT Exemplar Class 11 Chemistry Chapter 3 from this page. (b) Metallic Character (b) Atomic Mass MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. Question 10. Explanation: Answer: (c) O (b) 15, 5 and 3 In the following questions two or more options may be correct. CaO is basic; CO2 is acidic; SiO2 is weakly acidic. In the long form of the periodic table, the valence shell electronic configuration of 5s²5p4 corresponds to the element present in: Among alkali metals which element do you expect to be least electronegative and why? Assertion (A) : Boron has a smaller first ionisation enthalpy than beryllium. (c) O All transition elements are d-block elements, but all d-block elements are not transition elements. (c) 8 Write the drawbacks in Mendeleev’s periodic table that led to its modification. Revise all the concepts easily by taking help from the MCQ Questions for Class 10 Science with Answers are prepared based on the latest exam pattern. If you have any queries regarding CBSE Class 11 Chemistry Classification of Elements and Periodicity in Properties MCQs Multiple Choice Questions with Answers, drop a comment below and we will get back to you soon. The valency initially increases then decreases. So in the 4th principal quantum energy states, we can fill 18 electrons. (a) Atomic Number (b) s and d – Block Each question has one correct option. MCQs of chemistry class 11 chapter 1 Somebasic concepts of chemistry, useful for CBSE, NEET, IIT JEE and CET exam preparation, find more@learnfatafat Explanation: (a) B < Be < C < O < N In what manner is the long form of periodic table better than Mendeleev’s periodic table? Make use of the Chapter Wise MCQ Quiz Questions for Class 11 Chemistry to get a good grip on the concepts. Free PDF download of Important Questions for CBSE Class 11 Chemistry Chapter 3 - Classification of Elements and Periodicity in Properties prepared by expert Chemistry teachers from latest edition of CBSE(NCERT) books. On the Paulings electronegativity scale the element next to F is (d) 49, Answer: (c) 33 (c) Principal Quantum Number Arrange the elements N, P, O and S in the order of-. Number of valence electrons 3s²3p³ = 5 and valency = 3 in ground state. Refer to the Chapter Wise NCERT MCQ Questions for Class 11 Chemistry with Answers PDF Free Download are here to provide students an ample practice. Which of the following is the correct order of size of the given species: Comprehension given below is followed by some multiple choice questions. Question 8. Those elements which have less than 8 electrons in outermost shell are representative. To get fastest exam alerts and government job alerts in India, join our Telegram channel. Physics. Answer: (c) s and p – Block (b) The last element of the p-block in 6th period is represented by the outermost electronic configuration. Students can solve NCERT Class 12 Chemistry Electrochemistry MCQs Pdf with Answers to know their preparation level. From the NCERT Exemplar Class 11 Chemistry Chapter 3, candidates can understand the level and type of questions that are asked in the exam. so it is a f-block element and as it is in 7th period, it is a part of actinide series. Increasing order of electro negativity is Bi < P < S < Cl. Question 16. The exemplar has been provided by the National Council of Educational Research & Training (NCERT) and the candidates can check it from below for free of cost. The electronic configuration of an element is 1s², 2s² 2p6, 3s² 3p³. Atoms with fully or partly filled orbitals have high ionisation potential. 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