Question

Except hydrogen, the nuclei of all atoms contain________ fill in the blanks​

Answer 1

Answer:

both protons and neutrons.

Explanation:

Except for the nucleus of ordinary hydrogen, which has only a proton, all atomic nuclei contain both protons and neutrons. The number of protons determines the total positive charge or atomic number. This number is the same for all the atomic nuclei of a given chemical element.

Answer 2

both protons and neutrons