Question

Molecules made up of two or more elements are called :
A) Ions
B) Compounds
C) Mixture
D) Both a and c

Answer 1

Hint:First we should be aware of the term which is used for the material which is formed on the chemical combination of two or more types of atom may or may not be of ten same kind. They are basically called compounds which may be of many kinds depending on the kind of the bond which is formed between the constituents.

Complete answer:Here in the given question statement the question is regarding the terminology of the type of the substance which is formed when two or more atoms unite by the use of any force. This on a much permanent basis.

Compounds are the substances which consist of atoms or ions of two or more different elements joined by chemical bonds into a molecule. The combination in order to form a compound is in definite proportions. Therefore the elements too can’t be separated just by any physical means. If we take water as an example for a compound having two hydrogen atoms and one oxygen atom per molecule.

Mainly there are four types of compounds. They are categorized depending on how the constituent atoms are held together in the process of bonding :
1-Molecules are the compounds which are held together by covalent bonds
2-Ionic compounds are the compounds which are held together by ionic bonds
3-Intermetallic compounds are the compounds which are held together by metallic bonds
4-Certain complexes are the compounds which are held together by coordinate covalent bonds.

Therefore the correct answer is (B).

Note:Compounds are held together through a variety of different types of bonding and forces. The differences in the types of bonds in compounds differ based on the types of elements present in the compound. London dispersion forces are the weakest force of all intermolecular forces. They are temporary attractive forces that form on formation of temporary dipoles.