関連ワード:
is protons and electrons always the same number are protons and electrons always the same amount are the number of protons and electrons always the same in an atom are the number of protons and electrons always the same in an element is there always the same number of protons and electrons for all ions the number of protons and electrons is always the same do protons and electrons have the same number are electrons and protons the same number are protons and electrons always the same
