Pick out the wrong statement.
(A) The ratio of the density of the 'nucleus' to that of the 'atom' is 10
12
(B) α-particle is identical with a doubly charged helium ion
(C) The mass of deuterium atom is half that of helium atom
(D) Gamma rays are high energy electrons
(A) The ratio of the density of the 'nucleus' to that of the 'atom' is 10
12
(B) α-particle is identical with a doubly charged helium ion
(C) The mass of deuterium atom is half that of helium atom
(D) Gamma rays are high energy electrons