Answer:
17
Explanation:
the mass number of the element which is protons and neutrons is 17+18=35
electronic configuration is 2, 8, 7
valency of the element is 1 therefore the atomic number is 17
Through hemoglobin transport in blood, material exchange is carried out on the alveolar membrane.
The answer is D. His belief is was that atoms could not be split. That is what was disproved really fast ;)
