Advertisements
Advertisements
प्रश्न
Give the symbol and the number of atoms of the following elements present in water.
Advertisements
उत्तर
Water(H2O)
| Elements | Symbols |
| (Hydrogen) | H |
| [Oxygen (oxide)] | O |
No. of atoms of this element present
2 atoms of - H, 1 atom of - O
संबंधित प्रश्न
Give two examples of the following:
Liquid + Liquid mixture:
An atom of an element is denoted by a “symbol” Explain the meaning of the term ‘symbol’. State a reason for representing the following element by its symbol.
Copper by ‘Cu’
State the type of element for the following:
Copper
State the type of element for the following:
Silicon
State the type of element for the following:
Bromine
Give the symbol of the following element:
Phosphate
Give the formula of the following gas:
Carbon monoxide
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Mercury
write symbol with the variable valency
State whether the following ion or radical given below of a non-metallic element exhibits valency: 1–, 2– or 3–. (write the ion or radical with the correct valency).
Plumbite
Give the qualitative and quantitative meaning of the term ‘symbol’.
