The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer?

EduRev

All Courses

Explore Courses UPSC Exam UPSC Test Series Free Notes EduRev Infinity

Open App

NEET Exam > NEET Questions > The anionic sites occupied by unpaired electr...

Join the Discussion on the App

a)
Yellow, green and pink respectivelyf
b)
Pink, yellow and violet (or lilac) respectively.
c)
Yellow, pink and violet (or lilac) respectively.
d)
Red, yellow and pink respectively

Correct answer is option 'C'. Can you explain this answer?

FREE This question is part of

Test: Imperfections in Solids (Old NCERT)

Attempt Test

Attempt this Test

Verified Answer

The anionic sites occupied by unpaired electrons are called F-centres ...

F-centres impart yellow colour to the crystal of NaCl when heated in an atmosphere of sodium vapour. Similarly, excess of lithium makes LiCl crystals pink and excess of potassium makes KCl violet(or lilac)

View all questions of this test

View all answers Start learning for free

< Previous Question Next Question >

Explore Courses for NEET exam

Similar NEET Doubts

Read the following text and answer the following questions on the basis of the same:Electron Microscope Electron microscopes use electrons to illuminate a sample. In Transmission Electron Microscopy (TEM), electrons pass through the sample and illuminate film or a digital camera.Resolution in microscopy is limited to about half of the wavelength of the illumination source used to image the sample. Using visible light the best resolution that can be achieved by microscopes is about ~200 nm. Louis de Broglie showed that every particle or matter propagates like a wave. The wavelength of propagating electrons at a given accelerating voltage can be determined byThus, the wavelength of electrons is calculated to be 3.88 pm when the microscope is operated at 100 keV, 2. 74 pm at 200 keV and 2.24 pm at 300 keV. However, because the velocities of electrons in an electron microscope reach about 70% the speed of light with an accelerating voltage of 200 keV, there are relativistic effects on these electrons. Due to this effect, the wavelength at 100 keV, 200 keV and 300 keV in electron microscopes is 3.70 pm, 2.51 pm and 1.96 pm, respectively.Anyhow, the wavelength of electrons is much smaller than that of photons (2.5 pm at 200 keV). Thus if electron wave is used to illuminate the sample, the resolution of an electron microscope theoretically becomes unlimited. Practically, the resolution is limited to ~0.1 nm due to the objective lens system in electron microscopes. Thus, electron microscopy can resolve subcellular structures that could not be visualized using standard fluorescence microscopy.Q. Wavelength of electron as wave at accelerating voltage 200 keV is

View answer

In a cubic system P atoms occupy all the corners. Q atoms occupy face centres and R atoms occupy the edge centres. It's formula representation is P2Q3R4. The percentage number of face centres and edge centres occupied by Q and R respectively are? (A.) 50% & 33.3% (B.) 33.3% & 50% (C.) 25% & 66.6% (D.) 50% & 66.6% Option D is the correct answer can you answer this question.?

View answer

An electron and a proton posses the same de broglie wavelength. If Ee and Ep respectively are the energy of electron and proton and v and c are their respective velocities, then Ee/Ep is equal to

View answer

Molecular shapes of SF4, CF4 and XeF4 are

View answer

In an experiment the percentage of error occurred in the measurement of physical quantities A,B,Cand D are 1%,2%,3%and 4% respectively. Then the maximum percentage of error in the measurement X, where X =( A^2 ×B^1/2)/C^1/3×D^3 ?

View answer

Top Courses for NEETView all

Biology Class 11

Daily Test for NEET Preparation

NEET Mock Test Series 2025

Topic-wise MCQ Tests for NEET

Physics Class 11

Top Courses for NEET

View all

The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer?

Share with a Friend

Answer this doubt

Question Description
The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. 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 anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. 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 anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer?.

Solutions for The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. 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 anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice The anionic sites occupied by unpaired electrons are called F-centres or colour centres. They impart (X) colour to the crystals of NaCl. Excess of lithium makes LiCl crystals (Y)and excess of potassium makes KClcrystals (Z). (X), (Y) and (Z) area)Yellow, green and pink respectivelyfb)Pink, yellow and violet (or lilac) respectively.c)Yellow, pink and violet (or lilac) respectively.d)Red, yellow and pink respectivelyCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice NEET tests.

Explore Courses for NEET exam