A radioactive nucleus undergoes a series of decays according to the sequence,
`A overset (beta) rarr A_1 overset (alpha) rarr A_2 overset (alpha) rarr A_3`
If the mass number and atomic number of `A_3` are 172 and 69 respectively,what is the mass number and atomic number of A?

The radioactive isotope D decays according to the sequences Doverset(beta-)rarrD_1 overset(alpha-particli)rarrD_2 If the mass number and atomic number of D_2 are 176 and 71 respectively, what is the mass number?

The radioactive isotope D decays according to the sequences Doverset(beta-)rarrD_1 overset(alpha-particli)rarrD_2 If the mass number and atomic number of D_2 are 176 and 71 respectively, what is atomic number of D?

A radioactive nucleus A undergoes a series of decays according to the following scheme: A oversetalphararrA_1oversetbetararrA_2 oversetalphararrA_3oversetgammararrA_4 The mass number and atomic number of A are 180 and 72 respectively. What are these number for A_4 .

The sequence of stepwise decays of radioactive nucleus is D overset (alpha) rarr D_1 overset (beta) rarr D_2 overset (alpha) rarr D_3 overset (alpha) rarr D_4 . If the nucleon number and atomic number for D_2 are respectively 176 and 71 ,what ar the corresponding values for D an D_4 nuclei .Justify your answer.

The sequence of stepwise decay of a radioactive nucleus is: DoversetalphararrD_1oversetbetararrD_2 If the atomic number and mass number of D_2 and 71 and 176 respectively, what are their corresponding values for D?

Give the mass number and atomic number of elements on the righthand side of the decay process "_86^220Ru rarr Po+He .

A nucleus X_n^m emits one alpha -particle and one beta -particle. What are the mass number and atomic number of the product nucleus?

During the conversion : C_6H_5CH_2CH_3 overset ((a)) rarr X overset ((b)) rarr C_6H_5CH = CH_2 the reagents (a) and (b) are respectively

In the decay process: A overset(- alpha)rarr B overset(-beta)rarr C overset(-beta)rarr D a) A and B are isodiaphers b) A and C are isotones c) A and C are isotopes d) B, C and D are isobars

Out of the characterstics the mass number (A) and the atomic number (Z) of a nucleus, which one does not change during beta-decay .