The Data Booklet may be needed for this question. What might the proton number be of an element whose atoms each contain three unpaired electrons?
- A5
- B13
- C15
- D21
Chemistry 9701 · AS & A Level · Atomic structure
Chemistry 9701 · AS & A Level · Atomic structure
The Data Booklet may be needed for this question. What might the proton number be of an element whose atoms each contain three unpaired electrons?