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(a). The atomic number of sodium is 11. ...

(a). The atomic number of sodium is 11. What is the number of electrons in `Na^(+)`?
(b). The atomic number of chlrine is 17. What is the number of electrons in `Cl^(-)`?

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(a) 10
(b) 18
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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
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  2. (a). What do we call those particles which have more or less electrons...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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