Becquerel’s experiment consisted of four steps.

1. Get a sample of a uranium salt.
2. Expose the salt to sunlight.
3. Expose photographic plates to the salt.
4. Develop the plates.

A change in which step led to Becquerel’s discovery of radioactivity?
1
2
3
4

Respuesta :

Answer:

it's step 2

Explanation:

Answer:

step 2 fs

Explanation: