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What do we call those particles which h...

What do we call those particles which have more or less electrons than the normal atoms ?

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Ions
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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
  1. An liquid compound X of molecular mass 18 u can be obtained from a n...

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  2. One of the forms of a naturally occurring solid compound P is usually...

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  3. What do we call those particles which have more or less electrons t...

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  4. What do we call those particles which have : (a) more electrons ...

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  5. Define 'formula mass' of a compound.

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  6. What do we call those particles which are formed : (a) by the gain o...

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  7. State whether the following statements are true or false : (a) A ...

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  8. Write dow the formulae for the following compounds : (a) Calcium o...

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  9. An element Z has a valency of 3. What is the formula of oxide of Z ?

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  10. What is the name of a particle which contains 10 electrons, 11 protons...

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  11. Name the particle which has 18 electrons , 18 neutrons and 17 protons...

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  12. Fill in the following blanks with suitable words : (a) The particl...

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  13. Name the element water is made of. What are the valencies of the eleme...

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  14. If the valency of hydrogen is 1 and that of nitrogen is 3, work out t...

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  15. Work out the formula for sulphur dioxide. (Valencies : S = 4 , O = ...

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  16. If the valency of carbon is 4 and that of sulphur is 2, work out the...

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  17. An element X has a valency of 4 whereas another element Y has a valen...

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  18. An element B show valencies of 4 and 6. Write the formulae of its two...

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  19. An element X of valency 3 conbines with another element Y of valenc...

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  20. Work out the formula for magnesium hydrogencarbonate.

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