Advertisements
Advertisements
प्रश्न
Write down the name of a compound represented by the following formula:
CaCl2
Advertisements
उत्तर
Calcium chloride
APPEARS IN
संबंधित प्रश्न
Write down the name of a compound represented by the following formula:
CaCO3
Define: Atomic number
Write the formulae of the following compounds. Also name the elements present in them.
- Water
- Ammonia
- Methane
- Sulphur dioxide
- Ethanol
What is the difference between the molecule of an element and the molecule of a compound? Give one example of each.
Work out the formula for magnesium hydrogencarbonate.
An element X forms the following compounds with hydrogen, carbon and oxygen :
H2X, CX2, XO2, XO3
State the three valencies of element X which are illustrated by these compounds.
Give one example of a polyatomic molecule.
Give a reason why –
Helium is considered monoatomic, but hydrogen a diatomic molecule.
Which of the following is a short and scientific way of representing one molecule of an element or compound?
Give any two examples for heterodiatomic molecules.
