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LAKHMIR SINGH & MANJIT KAUR-ATOMS AND MOLECULES-Exercise
- What do we call those particles which have more or less electrons t...
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- What do we call those particles which have : (a) more electrons ...
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- Define 'formula mass' of a compound.
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- What do we call those particles which are formed : (a) by the gain o...
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- State whether the following statements are true or false : (a) A ...
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- Write dow the formulae for the following compounds : (a) Calcium o...
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- An element Z has a valency of 3. What is the formula of oxide of Z ?
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- What is the name of a particle which contains 10 electrons, 11 protons...
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- Name the particle which has 18 electrons , 18 neutrons and 17 protons...
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- Fill in the following blanks with suitable words : (a) The particl...
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- Name the element water is made of. What are the valencies of the eleme...
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- If the valency of hydrogen is 1 and that of nitrogen is 3, work out t...
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- Work out the formula for sulphur dioxide. (Valencies : S = 4 , O = ...
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- If the valency of carbon is 4 and that of sulphur is 2, work out the...
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- An element X has a valency of 4 whereas another element Y has a valen...
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- An element B show valencies of 4 and 6. Write the formulae of its two...
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- An element X of valency 3 conbines with another element Y of valenc...
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- Work out the formula for magnesium hydrogencarbonate.
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- An element X has a valency of 2. Write the simplest formula for : ...
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- Work out the formulae for the following compounds : (a) Sodium oxide...
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