Fill in the following blanks with suitable words:
(a) The particle which is formed by the gain of electrons by an atom is called ___.
(b) The particle which is formed by the loss of electrons by an atom is called ___.
(c) The particle which is formed by the loss or gain of electrons by an atom is called ___.
(d) A potassium ion has positive charge because it contains less ___ than ___.
(e) A sulphide ion has negative charge because it contains less ___ than ___.

Q. Fill in the following blanks with suitable words :
(a) The particle which is formed by gain of electrons by an atom is called ...................
(b) The particle which is formed by the loss of electrons by an atom is called ...................
(c) The particle which is formed by the loss or gain of electrons by an atom is called .....................
(d) A potassium ion has positive charge because it contains less .................... than ...................
(e) A sulphide ion has negative charge because it contains less ....................... than ...................

Q. A charged particle formed by the loss or gain of electrons during a compound formation is called an .....

Q. What do we call those particles which are formed :
(a) by the gain of electrons by atoms ?
(b) by the loss of electrons by atoms ?

Q. An ion is produced as a result of gain or loss of electrons by an atom. In $A{u}^{3+}$ ion, 3 electrons are ___________by $Au$ atom.