Question 15 How are isotopes of the same element alike? Select all that apply.
O They have the same number of protons.
They have the same atomic number.
They have the same number of neutrons.
They have the same mass numbers.

Which statement justifies that hydrogen peroxide (h2o2) is a polar molecule? the o – h bond is nonpolar and the molecule is asymmetric. the o – h bond is nonpolar and the molecule is symmetric. the o – h bond is polar and the molecule is asymmetric. the o – h bond is polar and the molecule is symmetric.