Chemistry · Atomic Structure
Which one of the following statements is correct?
- 1J. J. Thomson proposed that the nucleus of an atom contains only ne utrons
- 2An isotope of cobalt is used in the treatment of goiter
- 3The mass of an electron is about 1/2000 times that of a proton✓
- 4A neutron is formed by the combination of an electron and a proton, therefore it is neutral
Correct answer
The mass of an electron is about 1/2000 times that of a proton
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