Question

question 4 1 pts fluorine has an atomic number of __________. 9 19.00 17 7 question 5 1 pts given the following symbol, what is the atomic number of this element? ₂₅⁵⁵mn 30 25 55 55.938

Explanation:

• For Question 4: The atomic number of fluorine is a well - known fact in chemistry. Fluorine has an atomic number of 9.
• For Question 5: In the notation $_{25}^{55}Mn$, the sub - script represents the atomic number. So the atomic number of manganese (Mn) is 25.

Answer:

Question 4: A. 9
Question 5: B. 25