how many neutrons does the element polonium have? polonium 84 po 209 hint: atomic mass - atomic number

how many neutrons does the element polonium have? polonium 84 po 209 hint: atomic mass - atomic number
Answer
Explanation:
Step1: Identify atomic mass and number
Atomic mass of polonium is 209, atomic number is 84.
Step2: Calculate number of neutrons
Use the formula: Neutrons = Atomic Mass - Atomic Number. So, $209 - 84=125$.
Answer:
125