A) atomic number
B) number of neutron
C) number of electron
D) number of proton
Correct Answer: B
Solution :
\[_{17}C{{l}^{37}}\]\[_{17}C{{l}^{35}}\]and are isotopes of chlorine. They have Same atomic number (17), Same number of electron. Number of proton = number of electron Same number of protons (17), Different mass number. Different number of neutrons. [mass number = number of(p + n)]
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