A radioactive nucleus `._92 X^235` decays to `._91 Y^231`. Which of following particles are emitted ?

A radioactive element ._90 X^238 decay into ._83 Y^222 . The number of beta- particles emitted are.

A radioactive element ._90 X^238 decay into ._83 Y^222 . The number of beta- particles emitted are.

A radioactive element "_90X^(238) decays into "_83Y^222 . Thenumber of beta -particle emitted are:

At a result of radioactive decay a ._(92)^(238)U nucleus is changed to a ._(91)^(234)P nucleus. Which particles are emitted in the decay?

In a radioactive reaction ._92 X^232 rarr ._82 Y^204 , the number of alpha- particle emitted is.

In the following radioactive decay : ""_(92)X^(232)to_(89)Y^(220) how many alpha and beta -particles are ejected?

A radioactive element, U_92^238 undergoes successive radioactive decay and decays into Pb_82^206 The number of alpha and beta particles emitted respectively are