Question

what element has 2 protons? *
periodic table of the elements
manganese (mn)
neon (ne)
helium (he)
hydrogen (h)

Explanation:

In the periodic table, the atomic number of an element is equal to the number of protons in its nucleus. Helium (He) has an atomic number of 2, which means it has 2 protons.

Answer:

Helium (He)