Advertisements
Advertisements
प्रश्न
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
Advertisements
उत्तर
The valency of metal M is 3. So, the formulae are as follows:
Oxide - M2O3
APPEARS IN
संबंधित प्रश्न
Out of ozone, phosphorus, sulphur and krypton, the elements having the lowest and highest atomicities are respectively :
Give two examples of the following:
Solid + Liquid mixture
Give two examples of the following:
Liquid + Liquid mixture:
Match the non-metallic elements – with their correct symbols. Non-metallic elements are:
| Non-Metallic elements | Symbol |
| (a) Carbon | (1) O |
| (b) Chlorine | (2) I |
| (c) Oxygen | (3) Si |
| (d) Phosphorus | (4) C |
| (e) Hydrogen | (5) Cl |
| (f) Nitrogen | (6) P |
| (g) Iodine | (7) F |
| (h) Bromine | (8) H |
| (i) Fluorine | (9) S |
| (j) Silicon | (10) Br |
| (k) Sulphur | (11) N |
Give a reason why elements are tabulated in a table called the ‘Periodic table’.
Write the radical of the following valency:
Aluminium
Give the formula of the following gas:
Hydrogen chloride
State the valency of the following metallic element and write symbol with the valency
Aluminium
What does the symbol '(s)' present in a chemical equation, mean?
What does the symbol '(g)' present in a chemical equation, mean?
