Substances that cannot be separated  into simpler substances are

The chlorine atom differs from chloride ion in the number of

An example for inert gas which is mono atomic

Which neutral atom has 18 electrons in its outer shell?

An element which show variable valency is

Table salt is a compound that can be broken down into two elements which are chlorine and

Number of electrons in  {-CONH₂} is

Proton is

Who are malleable and ductile?

In an atom , the number of electrons outside the nucleus is equal to the number of