After the emission of one `alpha`- particle followed by two `beta`-particles from `"" _(92) ^(238) U,` the number of neutrons in the newly formed nucleus is

After emission of one alpha particle followed by one beta -particle from ""_(92)^(238)X , the number of neutrons in the atom will be

After the emission of an alpha - particle from the atom ""_(92)^(238) X , the number of neutrons in the atom will be xyz , Y is___

After the emission of alpha -particle from the atom X_92^238 , the number of neutrons in the atom will be

After the emission of alpha -particle from the atom X_92^238 , the number of neutrons in the atom will be

A radioactive atom _(Y)^(X) M emits two alpha particles and one beta particle successively. The number of neutrons in the nucleus of the product will be

A uranium nucleus U-238 of atomic number 92 emits two alpha - particles and two beta -particles and trasnforms into a thorium nucleus. What is the mass number and atomic number of the thorium nucleus so produced?