1.

What kind of radioactive decay does not lead to the formation of a daughter nucleus that is an isobar of the parent nucleus

Answer»

`ALPHA-`rays
`beta-`rays
Positron
Electron capture

Solution :When a RADIOACTIVE element EMITS an `alpha`-PARTICLE, the atomic no. of the resulting nuclide DECREASES by two units and atomic mass decreases by 4 units


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