A radioactive nucleus X decays as follows :
`A overset(beta^+)to A_1 oversetalpha to A_2`
If the mass number and atomic number of `A_2` are 176 and 71 respectively, what are the mass numbers and the atomic numbers of `A_1` and A? Which of these three elements are isobars?

A radioactive nucleus 'A' undergoes a series of decays as given below: Aoversetalpha to A_1 oversetbetato A_2oversetalpha to A_3 oversetgammato A_4 . The mass number and atomic number of A_2 are 176 and 71 respectively. Determine the mass and atomic numbers of A_4 and A .

Number of electrons and neutrons in an atom are 6 and 8 respectively, what is the mass number of the atom.?

What is mass number? How is it related to atomic number?

The atomic mass of an element is 24 and its atomic number is 12. Show how the atom of the element is constituted?

Radioisotope carbon-14 is a beta -emitter. What is the atomic number of the daughter element ?

If a radioactive element emits - (i) alpha -particle and (ii) beta -particle, then how its mass number and atomic number will change?

The atomic number of an element is 17 and its mass number is 37. The number of protons, electrons and neutrons present in the neutral atom are :

During the emission of a positron from a nucleus, the mass number of the daughter element remains the same but the atomic number

Radioactive isotope Th^232 (Z = 90) emits six alpha -particles and four beta -particles successively. What will be the mass number and atomic number of the isotope thus produced? Identify the element.

._92U^238 decays by emitting successively 8 alpha -particles and 8 beta -particles. Determine the mass number and atomic number of the new element and express it in symbol.