Question

if a -2 ion has 34 protons, what element is it?
germanium (ge)
selenium (se)
krypton (kr)
chlorine (cl)

Explanation:

The atomic number of an element is equal to the number of protons in its nucleus. Selenium (Se) has an atomic number of 34. The charge of the ion (-2) does not affect the identification of the element as the element is defined by the number of protons.

Answer:

selenium (Se)