Advertisements
Advertisements
Question
Give the qualitative and quantitative meaning of the term ‘symbol’.
Advertisements
Solution
Qualitative meaning: C is the symbol of an atom of the element carbon
S is the symbol of the atom of element sulphur.
This means symbols stand for a specific element.
No two elements can have the same symbol.
Quantitative meaning: A symbol also represents the quantity of the element i.e. atomic mass of the element. Symbol C represents 12 g of carbon. In other words how many times that element is heavier than `1/12` th C12
APPEARS IN
RELATED QUESTIONS
Write the names of following elements Na, C, Kr, U, Ra, Fe, Co.
If the symbol for Cobalt, Co, were written as CO, what would be wrong with it?
State what a chemical formula denotes.
Write the radical of the following valency:
Chlorine [Chloride]
Write the radical of the following valency:
Calcium
State a reason why the symbol of calcium is ‘Ca’ and of copper is ‘Cu’
Certain metal exhibit variable valencies which include valencies: 1+, 2+, 3+, and 4+.
State the variable valency of the following metal.
Lead
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).
Phosphate
Fill in the blank with the correct word from the options given below:
A symbol represents a short form of a / an ________.
Write the symbols for the following elements.
- Oxygen
- Gold
- Calcium
- Cadmium
- Iron
