The answer is C, i just took the k-12 test~
Answer:
Sodium Fluoride F 18 Injection is a positron emitting radiopharmaceutical, no-carrier added.
Explanation:
Element Name Fluorine
Element Symbol F
Atomic Number 9
The answer should be D hope this helps
B. Increasing the effective nuclear charge on an ion results in energy levels that are closer together.
hope it helps