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If a transition-metla compound absorbs v...

If a transition-metla compound absorbs violet-indigo radiation in the visible region Its colour would be .

A

Green

B

Yellow

C

Orange

D

Blue

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The correct Answer is:
To determine the color of a transition metal compound that absorbs violet-indigo radiation in the visible region, we can follow these steps: ### Step 1: Understand Color Absorption and Complementary Colors When a substance absorbs certain wavelengths of light, the color we perceive is the complementary color of the absorbed light. This means that if a specific color is absorbed, the color that we see is the one that is opposite to it on the color wheel. ### Step 2: Identify the Absorbed Colors In this case, the transition metal compound absorbs violet and indigo radiation. ### Step 3: Use the Color Wheel To find the complementary color, we can refer to the color wheel: - Violet is opposite to yellow. - Indigo is also close to blue, which is opposite to orange. ### Step 4: Determine the Resulting Color Since the compound absorbs both violet and indigo, we need to find the complementary color for the combination of these absorbed colors. The complementary color for violet is yellow, and for indigo, it leans towards orange. However, since violet is absorbed, the dominant complementary color we will perceive is yellow. ### Conclusion Thus, if a transition metal compound absorbs violet-indigo radiation, its color would be **yellow**.
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The colours of the transition metal are due to d-d excitation. The energy required for d-d electron axcitation is available in the visible range. Transition metal ions have the tendency to absorb certain rediations from the visible region and exhibit the complementary colour. The transition metal ions which have completely filled d-orbitals are colourless as the excitation of electron or electrons is not possible within d-orbitals. The transition metal ions which have completely empthy d-orbitals are also colourless. In KMnO_4 and K_2Cr_2O_7 , there are no unpaired electrons at the central atom but they are dep in colour. The colour of these compounds is due to charge transfer spectrum. for example in MnO_4 electron is momentrily transferred from O to the metal and thuys oxygen changes from O^(2-) and O^(ɵ) maganese from Mn^(7+) to Mn^(6+) . Q. Which is a coloured ion?

The colours of the transition metal are due to d-d excitation. The energy required for d-d electron axcitation is available in the visible range. Transition metal ions have the tendency to absorb certain rediations from the visible region and exhibit the complementary colour. The transition metal ions which have completely filled d-orbitals are colourless as the excitation of electron or electrons is not possible within d-orbitals. The transition metal ions which have completely empthy d-orbitals are also colourless. In KMnO_4 and K_2Cr_2O_7 , there are no unpaired electrons at the central atom but they are dep in colour. The colour of these compounds is due to charge transfer spectrum. for example in MnO_4 electron is momentrily transferred from O to the metal and thuys oxygen changes from O^(2-) and O^(ɵ) maganese from Mn^(7+) to Mn^(6+) . Q. Select the correct statement:

The colours of the transition metal are due to d-d excitation. The energy required for d-d electron axcitation is available in the visible range. Transition metal ions have the tendency to absorb certain rediations from the visible region and exhibit the complementary colour. The transition metal ions which have completely filled d-orbitals are colourless as the excitation of electron or electrons is not possible within d-orbitals. The transition metal ions which have completely empthy d-orbitals are also colourless. In KMnO_4 and K_2Cr_2O_7 , there are no unpaired electrons at the central atom but they are dep in colour. The colour of these compounds is due to charge transfer spectrum. for example in MnO_4 electron is momentrily transferred from O to the metal and thuys oxygen changes from O^(2-) and O^(ɵ) maganese from Mn^(7+) to Mn^(6+) . Q. Which of the following compounds is (are) coloured due to charge transfer spectra and not due to d-d transition?

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CENGAGE CHEMISTRY ENGLISH-COORDINATION COMPOUNDS-Exercises Single Correct (Hybridisation , Magnetic And Optical Properties )
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  2. Which of the following is paramagnetic ?

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  3. The pair which both the species have the same magnetic moment (spin on...

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  4. Select the correct order of magnetic moment (inBM) from the folliwng o...

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  5. Which of the pair of complex compounds are tettrahedral as well as dia...

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  6. Which of the following has a square planar geometry? .

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  7. Among [Ni(CO)(4)],[Ni(CN)(4)]^(2-),[NiCl(2)]^(2-) species, the hybridi...

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  8. Arrange the following in order of decreasing number of unpaired electr...

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  9. A substance which is not paramagnetic is .

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  10. An aqueous solution of titanium bromide shows zero magnetic moment. As...

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  11. Geometry, hybridisation and magnetic moment of the ions [Ni(CN)(4)]^(2...

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  12. The correct order of magnetic moment (spin values in is . (Atomic num...

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  13. A square planar complex is formed by hybridisation of which atomic ori...

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  14. The colour of a complex compound is due to .

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  15. If a transition-metla compound absorbs violet-indigo radiation in the ...

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  16. Transition metal compounds are usually coloured This is due to the ele...

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  17. Which of the following compounds is not coloured ?

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  18. The colour of Cu^(o+) compounds is .

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