Which of the following pairs of physical phenomenon and the discover is/are correctly matched? 1. James Chadwick Photoelectric 2. Albert Einstein Neutron 3. Marie Curie Radium Select the correct answer using the code given below:

The pairs provided are largely mismatched based on historical scientific records. James Chadwick is credited with the discovery of the neutron in 1932, for which he received the Nobel Prize in 1935 [1]. Albert Einstein is famously recognized for his 1905 explanation of the photoelectric effect, which established that light behaves as quanta (photons); he received the 1921 Nobel Prize for this specific discovery [1]. Therefore, pairs 1 and 2 are swapped. Pair 3 is correctly matched, as Marie Curie (along with Pierre Curie) discovered and isolated the radioactive elements radium and polonium in 1898. She was awarded the Nobel Prize in Chemistry in 1911 specifically for the discovery and isolation of radium [1]. Consequently, only the third pair is correct.

Sources

1. [1] https://en.wikipedia.org/wiki/Discovery_of_the_neutron