Advertisements
Advertisements
प्रश्न
Work out the formula for magnesium hydrogencarbonate.
Advertisements
उत्तर
Valency of Magnesium = 2
Valency of hydrogen carbonate ion = −1
Elements/ Ions: Gg HCO3
Formula for Magnesium hydrogen carbonate can be worked out by

Therefore, formula for Magnesium hydrogen carbonate is: Mg(HCO3)2.
APPEARS IN
संबंधित प्रश्न
Give the name of the element present in the following compound:
Baking powder
Give the name of the element present in the following compound:
Potassium sulphate
State the term.
The number of atoms present in a molecule of an element _________
One of the forms of a naturally occurring solid compound P is usually used for making the floors of houses. On adding a few drops of dilute hydrochloric acid to P, brisk effervescence are produced. When 50 g of reactant P was heated strongly, than 22 g of a gas Q and 28 g of a solid R were produced as products. Gas Q is the same which produced brisk effervescence on adding dilute HCl to P. Gas Q is said to cause global warming whereas solid R is used for white-washing.
- What is (i) solid P (ii) gas Q, and (iii) solid R.
- What is the total mass of Q and R obtained from 50 g of P ?
- How does the total mass of Q and R formed compare with the mass of P taken ?
- What conclusion do you get from the comparison of masses of products and reactant ?
- Which law of chemical combination is illustrated by the example given in this problem ?
Calculate the mass of 3.011 × 1024 atoms of carbon.
Explain the term – molecules. Give three examples of atoms of the same element forming a molecule. State the atomicity of the same.
Give a reason why –
Helium is considered monoatomic, but hydrogen a diatomic molecule.
State true of false. If false, give the correct statement.
NaCl represents one molecule of sodium chloride.
If a molecule is made of similar kinds of atoms, then it is called ______ atomic molecule.
Two elements sometimes can form more than one compound.
