Question

am i a cation or an anion? how many electrons do i have? hint remember that all elements start with the same number of protons and electrons. oxygen has 8 electrons, but here it has a -2 charge.
cation, 10 electrons
anion, 8 electrons
anion, 10 electrons
anion, 6 electrons

Explanation:

Step1: Identify ion type

A negative charge means it is an anion (gained electrons).

Step2: Calculate electron count

Neutral O has 8 electrons. A -2 charge means 2 extra electrons:
$8 + 2 = 10$

Answer:

anion, 10 electrons