Question

Give reason :-
a) ions are more stable than atoms
b) noble gases have low reactivity
c) an atom electrically neutral​

Answer 1

Answer:

a: While atoms are stable by default whereas ions become stable by loss or gain of electrons. Ions are more stable because their valence shell is fulfilled and therefore no sharing or bonding of electrons take place. While atoms do not have fulfilled valance shell and so, Ions are considered more stable.

b: Noble gases are the least reactive of all elements. That's because they have eight valence electrons, which fill their outer energy level. This is the most stable arrangement of electrons, so noble gases rarely react with other elements and form compounds.

c: When an atom has an equal number of electrons and protons, it has an equal number of negative electric charges (the electrons) and positive electric charges (the protons). The total electric charge of the atom is therefore zero and the atom is said to be neutral.