Give reason: (a) Mass number of an atom excludes the mass of an electron. (b) Nucleus of atom is charged. (c) Ions are more stable than atom.
Answers
Answer:
a) Mass of an electron is very small when compared to the mass of the nucleus hence we can neglect them.
b) Nucleus contains neutrons and protons. Neutrons are neutral ie; no charge while protons are positively charged hence the nucleus has a positive charge.
c) Ions are formed by losing or gaining electrons. An atom loses or gains electron to attain an octet configuration (according to octet theory). Once it attains an octet it is highly stable. Hence they are more stable than the atoms
Answer:
Explanation:
a) Mass of an electron is very small when compared to the mass of the nucleus hence we can neglect them.
b) Nucleus contains neutrons and protons. Neutrons are neutral ie; no charge while protons are positively charged hence the nucleus has a positive charge.
c) Ions are formed by losing or gaining electrons. An atom loses or gains electron to attain an octet configuration (according to octet theory). Once it attains an octet it is highly stable. Hence they are more stable than the atoms