Chemistry
Define:
(a) Atom
(b) Molecule
(c) Atomicity
(d) Formula
Elements, Compounds & Mixtures
21 Likes
Answer
(a) An atom can be defined as the smallest indivisible unit of an element which exhibits all the properties of that element and may or may not have independent existence.
(b) A molecule can be defined as the smallest unit of an element or a compound which exhibits all the properties of that element or compound and has independent existence. They are divisible into atoms.
(c) The number of atoms in a molecule of an element is called its atomicity.
(d) A formula (plural: formulae) is a short way of representing the molecule of an element or a compound. It indicates the types and numbers of atoms present in a molecule.
Answered By
16 Likes
Related Questions
The molecular formula of ammonia is:
- NO
- NH3
- NO2
- N2O
The combining power of magnesium and oxygen is the same, i.e. 2. What will be the molecular formula of magnesium oxide ?
- Mg2O2
- MgO2
- Mg2O
- MgO
State the difference between the following:
(a) 2H and H2
(b) H2O and 3Н2О ?
Write the molecular formulae of compounds calcium oxide, hydrogen sulphide, lead sulphide, zinc oxide and carbon dioxide.