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The atomic number of an element X is 8 a...

The atomic number of an element X is 8 and that of element Y is 12. Write down the symbols of the ions you would expect to be formed from their atoms.

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`X^(2-),Y^(2-)`
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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. (a). What do we call those particles which have more or less electrons...

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  2. (a). The atomic number of sodium is 11. What is the number of electron...

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  3. The atomic number of an element X is 8 and that of element Y is 12. Wr...

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  4. (a). Write down the electronic configuration of (i) magnesium atom, an...

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  5. What type of chemical bonds are present in a solid compound which has ...

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  6. State whether the followig statement is true or false: The Aquous so...

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  7. What type of bonds are present in hydrogen chloride and oxygen?

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  8. Write the electron-dot structure for the following molecules: (i) NaC...

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  9. The correct electron dot structure of a water molecule is

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  10. What type of bonds are present in methane (CH(4)) and sodium chloride ...

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  11. State one major difference between covalent and ionic bonds and give o...

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  12. What type of bonds are present in the following molecules? Draw their ...

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  13. Which inerrt gas electron configuration do the Cl atoms in Cl(2) molec...

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  14. Which of the following compounds are ionic and which are covalent? U...

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  15. Give one example each of the following (i) A molecule containing a s...

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  16. Fill in the blanks in the following sentences : (i). Two atoms of th...

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  17. (a). What is a covalent bond? What type of bond exists in (i) C Cl(4) ...

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  18. (a). What is an ion? Explain with examples (b). What iis the nature ...

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  19. State four major physical properties that can be used to distinguish b...

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  20. Explain why: (a). Covalent compounds have generally low melting poin...

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