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الرجاء حل هذه المساله....
9. The energy needed to change a He+ ion in the ground state into a He2+ ion is
a. 13.6 eV b. 54.4 eV c. 112.4 eV d. 92.9 eV e. 27.2 eV |
رد: الرجاء حل هذه المساله....
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مشاهد ولارد |
الساعة الآن 13:29 |
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