Answer:
Chemical I would assume.
Explanation:
This is because drugs have chemicals in them.
That means that the amount of energy can only be certain numbers, as if
energy came in tiny packets, and the in-between amounts don't exist.
Another example of a measurement in nature that is quantized is
electric charge.
The work of John Lawrence scientist was most essential to the use of radioactive isotopes in medicine.
<h3>Which scientist use of radioactive isotopes in medicine?</h3>
John Lawrence was the first scientist that use a radioactive isotope in the treatment of a human disease. He became known as the father of nuclear medicine and his laboratory is considered the birthplace of this field.
So we can conclude that the work of John Lawrence scientist was most essential to the use of radioactive isotopes in medicine.
Learn more about radioactive here: brainly.com/question/1236735
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Answer:
Nickel has an atomic number of 28,so it has 28 electrons
Nickel has 10 valence electrons