निम्नलिखित में से किसने परमाणु विखंडन की खोज की, जिसके कारण परमाणु बम का विकास हुआ?

Which isotope, detected in breast milk samples across multiple districts in Bihar in a Scientific Reports study, raised safety concerns?

An alpha particle carries two units of positive charge. Its mass is approximately equal to that of which of the following?