All Courses
Get the App Signup / Login
Sign in Open App
NEET Exam  >  NEET Tests  >  Test: f-Block Elements (Lanthanides) - I - NEET MCQ

Test: f-Block Elements (Lanthanides) - I - NEET MCQ


Test Description

25 Questions MCQ Test - Test: f-Block Elements (Lanthanides) - I

Test: f-Block Elements (Lanthanides) - I for NEET 2024 is part of NEET preparation. The Test: f-Block Elements (Lanthanides) - I questions and answers have been prepared according to the NEET exam syllabus.The Test: f-Block Elements (Lanthanides) - I MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: f-Block Elements (Lanthanides) - I below.
Solutions of Test: f-Block Elements (Lanthanides) - I questions in English are available as part of our course for NEET & Test: f-Block Elements (Lanthanides) - I solutions in Hindi for NEET course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt Test: f-Block Elements (Lanthanides) - I | 25 questions in 35 minutes | Mock test for NEET preparation | Free important questions MCQ to study for NEET Exam | Download free PDF with solutions
Test: f-Block Elements (Lanthanides) - I - Question 1
Save

Only One Option Correct Type

Direction (Q. Nos. 1- 10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q. 

Set of continuous atomic numbers of elements are present in the same group as well as same period.

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 1

Er (68), Tm (69), Yb (70) and Lu (71) elements are present in same group as well as same period.

Test: f-Block Elements (Lanthanides) - I - Question 2
Save

The element with atomic number 62 belongs

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 2

Samarium (Sm) (Z = 62) belongs to III B group and 6th period.

1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: f-Block Elements (Lanthanides) - I - Question 3
Save

The radius of lanthanum is 1.06 Å. Then which of the following is closest to the radius of Lu3+ ion

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 3

Due to lanthanoid contraction.

Test: f-Block Elements (Lanthanides) - I - Question 4
Save

+ 4 ion of which has half-filled 4f subshell
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 4

Tb (Z = 65) have [Xe] 4f95d06s2 configuration. Tb4+ have half-filled 4f subshell, i.e. 4f7.

Test: f-Block Elements (Lanthanides) - I - Question 5
Save

Lanthanide for which + II and + III oxidation states are common is
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 5

Europium (Eu) has [Xe] 4f75d06s2 configuration. The oxidation state of + 2 and + 3 are exhibited by these elements, e.g. Eu2+ is[Xe] 4f7and Eu3+ is [Xe]4f6.

Test: f-Block Elements (Lanthanides) - I - Question 6
Save

An alloy of lanthanide
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 6

Misch metal is lanthanide metal (95%) and iron (5%) and traces of S, C, Ca, Al.

Test: f-Block Elements (Lanthanides) - I - Question 7
Save

Across the lanthanide series, the basicity of the lanthanide hydroxides
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 7

The basicity decreases from Ce(OH)3 to Lu(OH)3. Due to lanthanide contraction, the decrease in the size of the cation increases the covalent character between the lanthanide ion and hydroxide ion thereby, reducing the basic character of the lanthanide hydroxide.

Test: f-Block Elements (Lanthanides) - I - Question 8
Save

Gadolinium belongs to 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 8

Gadolinium (Gd) have [Xe] 4f75d16s2 configuration.

Test: f-Block Elements (Lanthanides) - I - Question 9
Save

Lanthanides contraction causes
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 9

Electronegativity increases as we move from left to right due to lanthanide contraction.

Test: f-Block Elements (Lanthanides) - I - Question 10
Save

Which one of the following statement(s) is/are incorrect for lanthanides?
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 10

The hardness increases with increasing atomic number.

*Multiple options can be correct
Test: f-Block Elements (Lanthanides) - I - Question 11
Save

One or More than One Options Correct Type

Direction (Q. Nos. 11-15) This section contains 5 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONE or MORE THAN ONE are correct.

Q.

Which of the following statements are incorrect regarding lanthanides?
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 11

Ce3+ (4f1) and Yb3+ (f13) are colourless because they do not absorb in the visible region. The E° value for Ce4+ /Ce3+ is + 1.74 V which suggest it is strong oxidising agent.

Test: f-Block Elements (Lanthanides) - I - Question 12
Save

Observe the following statements. Which is correct statement regarding lanthanides?
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 12

The correct answer is option B
Ce shows +4 oxidation state in aq.solution
Ce (58) to lu (71)-  lanthanide
Th (90) to Lr (103)- actinoids.

*Multiple options can be correct
Test: f-Block Elements (Lanthanides) - I - Question 13
Save

The colourless ions among the lanthanides are
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 13

La3+, Gd3+ and Lu3+ have empty (4f0) half-filled (4f7) and full-filled (4f14) orbitals. Ce3+ (4f1) is colourless because it does not absorb in the visible region.

*Multiple options can be correct
Test: f-Block Elements (Lanthanides) - I - Question 14
Save

The correct statements among the following are
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 14

Basic strength decreases from La(OH)3 to Lu (OH)3,

*Multiple options can be correct
Test: f-Block Elements (Lanthanides) - I - Question 15
Save

Which of the following pairs have same atomic size?
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 15

The pair of elements Zr - Hf, Nb - Ta, Mo - W possess almost the same size. After the lanthanoids the increase in radii from second to third transition series almost vanishes.

Test: f-Block Elements (Lanthanides) - I - Question 16
Save

Comprehension Type

Direction (Q. Nos. 16 and 17) This section contains a paragraph, describing theory, experiments, data, etc. Two questions related to the paragraph have been given. Each question has only one correct answer among the four given options (a), (b), (c) and (d).

Passage

The observed oxidation state of lanthanides either in solution or in insoluble compounds form tripositive cations. Based on the ionisation enthalpies and hydration energy factors, it is concluded that tripositive species is more stable than di or tetrapositive species in aqueous solution. In general, ions having half-filled (Tb4+ , Eu2+ , Gd3+) or completely filled 4f orbitals (Yb2+, Lu3+) or noble gas configuration (La3+, Ce4+) are stable. This is supported by their SRP values. Ions with + 4 oxidation state act as oxidising and ions having + 2 oxidation state act as reducing agents. Ions having same number of unpaired electrons in f-orbitals possess same colour.

Q. 

Observe the following equations.
Sm3+(aq) + e- → Sm2+ (aq), E° = - 1.55 V
Eu3+(aq) + e- → Eu2+ (aq), E° = - 0.43 V
Yb3+(aq) + e- → Yb2+ (aq), E° = - 1.55V

Based on the above equations, the correct reducing strength is in the order of
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 16

More negative the SRP value, stronger is the reducing agent.

Test: f-Block Elements (Lanthanides) - I - Question 17
Save

The observed oxidation state of lanthanides either in solution or in insoluble compounds form tripositive cations. Based on the ionisation enthalpies and hydration energy factors, it is concluded that tripositive species is more stable than di or tetrapositive species in aqueous solution. In general, ions having half-filled (Tb4+ , Eu2+ , Gd3+) or completely filled 4f orbitals (Yb2+, Lu3+) or noble gas configuration (La3+, Ce4+) are stable. This is supported by their SRP values. Ions with + 4 oxidation state act as oxidising and ions having + 2 oxidation state act as reducing agents. Ions having same number of unpaired electrons in f-orbitals possess same colour.

Q. Which is correct statement?
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 17

Ce4+ is [Xe] 4f0, it tends to revert to more stable oxidation state of +3 by gain of an electron. That is why, in aqueous solution, Ce4+ is good oxidising agent.

Test: f-Block Elements (Lanthanides) - I - Question 18
Save

Matching List Type

Direction (Q. No. 18) Choices for the correct combination of elements from Column I and Column II are given as options (a), (b), (c) and (d), out of which one is correct.

Q. 

Match the Column I with Column II and mark the correct option from the codes given below.
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 18

(i) → (p.t) (ii) → (r) (iii) → (q,s) (iv) → (q,s)

*Answer can only contain numeric values
Test: f-Block Elements (Lanthanides) - I - Question 19
Save

One Integer Value Correct Type

Direction (Q. Nos. 19-23) This section contains 5 questions. When worked out will result in an integer from 0 to 9 (both inclusive).

Q. 

Number of species that have half-filled 4f subshell among Gd, Lu, Eu, Yb, Eu2+ Gd3+ ,Eu3+ ,Ce4+ ,Tb4+.

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 19

Gd: [Xe] 4f75d16s2,
Lu: [Xe] 4f145d16s2,
Eu: [Xe] 4f75d06s2,
Yb: [Xe] 4f145d06s2,
Eu2+ : [Xe] 4f75d06s0,
Gd3+ : [Xe] 4f75d06s0,
Eu3+ : [Xe] 4f65d06s0,
Tb4+: [Xe] 4f75d06s0,
Ce4+: [Xe] 4f05d06s0,

*Answer can only contain numeric values
Test: f-Block Elements (Lanthanides) - I - Question 20
Save

Number of unpaired electrons in ytterbium is/are

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 20

Ytterbium has configuration [Xe] 4f145d06s2

*Answer can only contain numeric values
Test: f-Block Elements (Lanthanides) - I - Question 21
Save

Number of diamagnetic lanthanide ions among

La3+, Ce3+ Ce4+, Gd3+,Yb2+,Yb3+,Lu2+, Lu3+ are

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 21

La3+, Ce4+, Yb2+ and Lu3+ are diamagnetic in nature.

*Answer can only contain numeric values
Test: f-Block Elements (Lanthanides) - I - Question 22
Save

Number of good reducing agents among

Ce4+, Eu2+, Sm2+,Yb2+,Tb4+,La3+ Ce3+ are

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 22

Eu2+ ,Sm2+ ,Yb2+ are reducing agents.

*Answer can only contain numeric values
Test: f-Block Elements (Lanthanides) - I - Question 23
Save

The highest oxidation state shown by any transition element is

Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 23

The highest oxidation state shown by the transition element is Ru (+8) in 4d series and Os in 5d series.

Test: f-Block Elements (Lanthanides) - I - Question 24
Save

Statement Type

Direction (Q. Nos. 24 and 25) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q. 

Statement I : The second and third rows of transition elements resemble each other much more than they resemble the first row.

Statement II : Due to lanthanide contraction, the atomic radii of the second and the third row transition elements.
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 24

Both statements I and II are correct. Statement II correctly explains the statement I.

Test: f-Block Elements (Lanthanides) - I - Question 25
Save

Statement I : Many trivalent lanthanide ions are coloured both in solid state and in aqueous solution.

Statement II : Colour of these ions is due to the presence of f-electrons.
Detailed Solution for Test: f-Block Elements (Lanthanides) - I - Question 25

Many trivalent lanthanide ions are coloured due to the presence of f-electrons, in solid state as well as in aqueous solutions.

Information about Test: f-Block Elements (Lanthanides) - I Page
In this test you can find the Exam questions for Test: f-Block Elements (Lanthanides) - I solved & explained in the simplest way possible. Besides giving Questions and answers for Test: f-Block Elements (Lanthanides) - I, EduRev gives you an ample number of Online tests for practice

Top Courses for NEET

Download as PDF

Top Courses for NEET

Important Questions for f-Block Elements (Lanthanides) - I

Find all the important questions for f-Block Elements (Lanthanides) - I at EduRev.Get fully prepared for f-Block Elements (Lanthanides) - I with EduRev's comprehensive question bank and test resources. Our platform offers a diverse range of question papers covering various topics within the f-Block Elements (Lanthanides) - I syllabus. Whether you need to review specific subjects or assess your overall readiness, EduRev has you covered. The questions are designed to challenge you and help you gain confidence in tackling the actual exam. Maximize your chances of success by utilizing EduRev's extensive collection of f-Block Elements (Lanthanides) - I resources.

f-Block Elements (Lanthanides) - I MCQs with Answers

Prepare for the f-Block Elements (Lanthanides) - I within the NEET exam with comprehensive MCQs and answers at EduRev. Our platform offers a wide range of practice papers, question papers, and mock tests to familiarize you with the exam pattern and syllabus. Access the best books, study materials, and notes curated by toppers to enhance your preparation. Stay updated with the exam date and receive expert preparation tips and paper analysis. Visit EduRev's official website today and access a wealth of videos and coaching resources to excel in your exam.

Online Tests for f-Block Elements (Lanthanides) - I

Practice with a wide array of question papers that follow the exam pattern and syllabus. Our platform offers a user-friendly interface, allowing you to track your progress and identify areas for improvement. Access detailed solutions and explanations for each test to enhance your understanding of concepts. With EduRev's Online Tests, you can build confidence, boost your performance, and ace f-Block Elements (Lanthanides) - I with ease. Join thousands of successful students who have benefited from our trusted online resources.
© EduRev
Education Revolution
Follow Us
Signup to see your scores go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup