Pick out the wrong statement.
(A) α-particle emission from a radioactive element makes it electrically
negative
(B) β-particle emission from a radioactive element makes it electrically
positive
(C) A radioactive element having a half life period of 20 years will
completely disintegrated in 40 years
(D) The disintegration constant of a radioactive isotope is independent of
pressure, temperature or concentration
(A) α-particle emission from a radioactive element makes it electrically
negative
(B) β-particle emission from a radioactive element makes it electrically
positive
(C) A radioactive element having a half life period of 20 years will
completely disintegrated in 40 years
(D) The disintegration constant of a radioactive isotope is independent of
pressure, temperature or concentration