1.

Bohr models of atoms A, B, C, D are given (Symbols are not real).a) Write the atomic number, mass number and electronic configuration of the atoms. b) Among these, which are isotopes? Why?

Answer»
 Element Atomic Number Mass Number Electron Configuration
 A 6 12 2,4
 B 7 15 2,8,5
 C 6 14 2,4


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