Successive emission of an `alpha`-particle and two `beta`-particles by an atom of an element result in the formation of its

Options

A. isobar
B. isotone
C. isotope
D. isotherm

Answer

C

Explanation

Isotopes
`""_(x)A^(y) overset(alpha-"emission")to ""_(x-2)B^(y-4)overset(beta-"emission")to ""_(x-1)C^(y-4)overset(beta-"emission")to ""_(x)A^(y-4)`
Clearly , `""_(x)A^(y-4)` and `""_(x)A^(y-4)` are isotopes (same atomic number but different mass numbers)