Question

give reason -
1) nucleus of an atom is heavy and positively charge.

2) Ion's are more stable than atoms​

Answer 1

Answer:

1)Proton has positive charge whereas neutron has no charge hence net charge on nucleus is positive. Nucleus is heavy because of the presence of proton and neutron. b An atom is electrically neutral because it possess same number of proton positive charge and electron negative charge.

2)When an atom changes into an ion (cation or anion) the valence shell of the ion has a complete octet or duplet.