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An element reacts with oxygen to give a ...

An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be

A

Calcium

B

Sulphur

C

Silicon

D

Arsenic

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BEYOND PUBLICATION-CHEMICAL BONDING-EXERCISE
  1. If the element can lose an electron readily, they are said to be

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  2. Which of the following is the most reactive ?

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  3. An element reacts with oxygen to give a compound with a high melting p...

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  4. How do valence electrons are showed in the lewis structure ?

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  5. The elements with three or less than three electrons in the outer shel...

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  6. How do you write the lewis dot structure for an inert gas ?

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  7. Between which type of atoms ionic bond will form ?

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  8. Why do we consider KCl as an ionic solid ?

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  9. Which type of forces keeps the cations and anions together ?

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  10. Whether compound formed due to ionic bond is negative or positive ?

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  11. Write the names of any two compounds which have ionic bond.

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  12. As Boran has one unpaired electron, what is the result of it ?

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  13. What is the hybridisation of B and N in borazole?

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  14. What are the bond angles in H(2)O and H.S ? Why they differ in their b...

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  15. How many fluorine atoms overlap their orbitals with hybridised boran o...

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  16. Which type of orbitals that fluorine has ? Either s or p orbital ?

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  17. Which elements try to lose three electrons from their atoms ? Why ?

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  18. Write the lewis dot structures of carbon and magnesium ?

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  19. The shape of a molecule is linear. What would be the bond angle in it ...

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  20. There is a triple bond between two atoms. Which molecule they belongs...

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