NEET Exam  >  NEET Questions  >  The incorrect statement among the following i... Start Learning for Free
The incorrect statement among the following is:
  • a)
    Actinoid contraction is greater for element to element than Lanthanoid contraction.
  • b)
    Most of the trivalent Lanthanoid ions are colorless in the solid state.
  • c)
    Lanthanoids are good conductors of heat and electricity.
  • d)
    Actinoids are highly reactive metals, especially when finely divided.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The incorrect statement among the following is:a)Actinoid contraction ...
Most of the trivalent Lanthanoid ions are coloured in the solid state.
Free Test
Community Answer
The incorrect statement among the following is:a)Actinoid contraction ...
The incorrect statement among the following is: Option B: Most of the trivalent Lanthanoid ions are colorless in the solid state.

Explanation:
Lanthanoids are a group of elements that belong to the f-block of the periodic table. They are also known as rare earth elements. Lanthanoid contraction refers to the decrease in the size of the elements as you move from one element to the next in the lanthanoid series. It is caused by poor shielding of the nuclear charge by the 4f electrons.

a) Actinoid contraction is greater for element to element than Lanthanoid contraction:
The actinoid series is the row of elements below the lanthanoid series in the periodic table. Actinoid contraction is the decrease in size of the elements as you move from one element to the next in the actinoid series. It is greater than lanthanoid contraction because the 5f electrons are less effective in shielding the nuclear charge compared to the 4f electrons.

b) Most of the trivalent Lanthanoid ions are colorless in the solid state:
This statement is incorrect. Trivalent lanthanoid ions are known for their characteristic colors in the solid state. Each lanthanoid element has its own unique color due to the presence of partially filled 4f orbitals which give rise to electronic transitions. For example, europium (Eu3+) ions are red, terbium (Tb3+) ions are green, and samarium (Sm3+) ions are orange.

c) Lanthanoids are good conductors of heat and electricity:
This statement is correct. Lanthanoids are metals and as such, they are good conductors of heat and electricity. They have metallic bonding, which allows for the easy movement of electrons and the transfer of heat and electrical energy.

d) Actinoids are highly reactive metals, especially when finely divided:
This statement is correct. Actinoids are highly reactive metals, especially when they are in a finely divided state. They readily react with air, water, and acids. Some actinoids, such as uranium and plutonium, are known for their radioactive properties and are used in nuclear reactors and weapons.

In conclusion, the incorrect statement among the given options is Option B: Most of the trivalent Lanthanoid ions are colorless in the solid state. Trivalent lanthanoid ions exhibit characteristic colors in the solid state due to the presence of partially filled 4f orbitals.
Attention NEET Students!
To make sure you are not studying endlessly, EduRev has designed NEET study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in NEET.
Explore Courses for NEET exam

Top Courses for NEET

The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer?
Question Description
The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer?.
Solutions for The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for NEET. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free.
Here you can find the meaning of The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer?, a detailed solution for The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer? has been provided alongside types of The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The incorrect statement among the following is:a)Actinoid contraction is greater for element to element than Lanthanoid contraction.b)Most of the trivalent Lanthanoid ions are colorless in the solid state.c)Lanthanoids are good conductors of heat and electricity.d)Actinoids are highly reactive metals, especially when finely divided.Correct answer is option 'B'. Can you explain this answer? tests, examples and also practice NEET tests.
Explore Courses for NEET exam

Top Courses for NEET

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev