Question

process of formation of Ions from molecules which are not in ionic state

Answer 1

Atoms like to be stable. They feel most stable when their outer electron shells are full. They become full when they have eight electrons in them. This is called the octet rule, which says that atoms like to have full valence shells of eight electrons. Remember that the valence electrons are the electrons in the outermost energy shell of an atom. They get eight electrons by either borrowing some from or giving some to another atom. 

Atoms start out electrically neutral because they have the same number of negatively charged electrons and positively charged protons. An ion is an atom that has gained or lost one or more electrons and therefore has a negative or positive charge. A cation is an atom that has lost a valence electron and therefore has more positive protons than negative electrons, so it is positively charged. An anion is an atom that has gained a valence electron and is negatively charged.