Which kind of force acts within a molecule?

An intramolecular force

The correct answer is intramolecular force.

Explanation:

The force of attraction that prevails in between the bonds inside a molecule is known as the intramolecular force of attraction. These are of two types, that is, ionic bond and covalent bond.  

A bond between two ions that are produced due to the conduction of electrons from one to another is known as an ionic bond, and the bond between the two atoms produced due to the distribution of electrons is known as a covalent bond.  

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-

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