Advertisements
Advertisements
प्रश्न
Explain the terms ‘chemical formula’.
Advertisements
उत्तर १
Chemical formula is a representation of a substance either element or compound by means of symbols.
उत्तर २
Chemical Formula: “A molecule of a substance element or compound could be represented by symbols. Representation known as chemical formula i.e. molecular formula of oxygen gas is O2 water H2O, hydrochloric acid HCl etc.
APPEARS IN
संबंधित प्रश्न
A student wants to have 3.011 × 1023 atoms each of magnesium and carbon elements. For this purpose, he will have to weigh :
The formula of the sulphate of an element M is M2(SO4)3
Write the formula of it
Oxide
State what a chemical formula denotes.
Give the formula of the following gas:
Nitric oxide
State the valency of the following metallic element and write symbol with the valency
Sodium
State the valency of the following metallic element and write symbol with the valency
Magnesium
State the valency of the following metallic element and write symbol with the valency
Zinc
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).
Iodide
What does the symbol '→' present in a chemical equation, mean?
______ of some elements are derived from Latin or Greek names of the elements.
