Atomic number remains same for another isotope but only mass number changes. So it will be 1
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When ethyl chloride is reduced with atomic hydrogen ethane and HCl are formed, Zn + 2HCl -------> ZnCl2 + 2[H] CH3-CH2-Cl + 2[H] -----> CH3-CH3 + HCl
The atomic number of fluorine is 9.The atomic number of sodium is 11.
An example of atomic number is 8, which corresponds to oxygen. The atomic number represents the number of protons in an atom's nucleus.
The atomic number is equal to number of protons in the atomic nucleus.
Protons are equal to the atomic number of an element.