A nucleus consists of 19 protons and 20 neutrons. The conventional symbol of this nucleus is
Correct answer: C. 19 K 39
- A. 11 Na 12
- B. 19 K 19
- C. 19 K 39
- D. 19 K 20
- E. 12 Na 12
Explanation
The conventional symbol of an element contains the mass number and proton number The mass number of the element shown above(20n+19p=39) The only option that has a mass number with it is option C.
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