Advertisements
Advertisements
प्रश्न
State the atomicity of the following:
Chlorine
Advertisements
उत्तर
Diatomic
APPEARS IN
संबंधित प्रश्न
Write down the name of a compound represented by the following formula:
KNO3
Give the name of the element present in the following compound:
Hydrogen bromide
Give the name of the element present in the following compound:
Potassium sulphate
Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.
State the term.
The number of atoms present in a molecule of an element _________
Define: Atomic weight :
What is meant by atomicity ? Explain with two examples.
What is the difference between the molecule of an element and the molecule of a compound? Give one example of each.
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 ?
Work out the formula for magnesium hydrogencarbonate.
The cation of an element has :
Molecular compounds are usually formed by the combination between :
An element A forms an oxide A2O5.
What is the valency of element A ?
Correct the following statement:
A molecule of sulphur is monoatomic.
Why are the symbols and formulae of substances important?
Explain the term – molecules. Give three examples of atoms of the same element forming a molecule. State the atomicity of the same.
Give one example of a polyatomic molecule.
Give a reason why –
Helium is considered monoatomic, but hydrogen a diatomic molecule.
State the atomicity of the following:
Neon
State the atomicity of the following:
Oxygen
Which of the following is a short and scientific way of representing one molecule of an element or compound?
Which of the following is a triatomic molecule?
The Atomicity of phosphorous is ______
Define: Atomicity.
Give any two examples for heterodiatomic molecules.
Derive the relationship between Relative molecular mass and Vapour density.
Which of the following contains maximum number of molecules?
Write any two classifications of a molecule.
