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Except Cu, Ag and Au, most metals are bl...

Except Cu, Ag and Au, most metals are black. Why?

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Most metals are black except copper, silver and gold. It is due to the absorption of light of all wavelengths. Absorption of light of all wavelengths is due to the absence of band gap in metals.
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FULL MARKS-CHEMICAL BONDING -ADDITIONAL QUESTIONS SOLVED (2-MARK QUESTIONS)
  1. Explain the bond formation of hydrogen molecule.

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  2. Explain the bond formation of hydrogen molecule.

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  3. Identify the bond between H and F in HF molecule.

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  4. What is meant by colloid ?

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  5. Why metallic bonding is referred as electronic bonding?

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  6. Metals have density .

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  7. Metals are ductile in nature. Why?

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  8. The melting point of aluminium is .

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  9. The crystals which are good conductors of electricity and heat are

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  10. Metals have high thermal conductivity. Give reason.

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  11. Except Cu, Ag and Au, most metals are black. Why?

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  12. Write the favourable factors for the formation of ionic bond.

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  13. Although geometries of NH(3) and H(2)O molecules are distorted tetrah...

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  14. Write the significance/applications of dipole moment.

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  15. CO(2) and H(2)O both are triatomic molecules but their dipole moment ...

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  16. What is the total number of sigma and pi bonds in the following molecu...

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  17. Use molecular orbital theory to explain why the Be(2) molecule does no...

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  18. Compare the relative stability of the following species and indicate t...

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  19. Account for the following: (i) water is a liquid while H(2)S is a ga...

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  20. Why B(2) is paramagnetic in nature while C(2) is not?

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