Advertisements
Advertisements
Question
Two elements sometimes can form more than one compound.
Options
True
False
Advertisements
Solution
True
APPEARS IN
RELATED QUESTIONS
Write down the name of a compound represented by the following formula:
Al2(SO4)3
Write down the name of a compound represented by the following formula:
KNO3
Calculate the number of molecules of sulphur (S8) present in 16 g of solid sulphur.
Define: Atomic number
What is meant by atomicity ? Explain with two examples.
What is the atomicity of the following ?
- Oxygen
- Ozone
- Neon
- Sulphur
- Phosphorus
- Sodium
Write the formulae of the following compounds. Also name the elements present in them.
- Water
- Ammonia
- Methane
- Sulphur dioxide
- Ethanol
In what form does oxygen gas occur in nature ?
In what form do noble gases occur in nature?
Work out the formula for magnesium hydrogencarbonate.
What are (i) ionic compounds, and (ii) molecular compounds ? Give two examples of each type of compounds.
Molecular compounds are usually formed by the combination between :
An element A forms an oxide A2O5.
What is the valency of element A ?
Calculate the mass of 3.011 × 1024 atoms of carbon.
Correct the following statement:
A molecule of sulphur is monoatomic.
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 triatomic molecule
State the atomicity of the following:
Neon
State the atomicity of the following:
Chlorine
State the atomicity of the following:
Sulphur
Which of the following is a short and scientific way of representing one molecule of an element or compound?
State true of false. If false, give the correct statement.
NaCl represents one molecule of sodium chloride.
Classify the following molecules as the molecules of element or compound
| 1. |  |
|
| 2. |  |
|
| 3. |  |
|
| 4. |  |
The Atomicity of phosphorous is ______
Give any two examples for heterodiatomic molecules.
