Answer :
Final answer:
Henry Moseley discovered atomic number in 1913, linking it to X-ray emission under electron bombardment.
Explanation:
Henry Moseley is credited with the discovery of atomic number in 1913. He found that a class of X-rays emitted by an element when bombarded with electrons could be a measurable property increasing linearly with atomic number.
Learn more about Atomic number discovery here:
https://brainly.com/question/30671706
