melissa857 melissa857
  • 27-08-2020
  • Chemistry
contestada

please help with the last 2.

please help with the last 2 class=
Relax

Respuesta :

TheChosenTwice TheChosenTwice
  • 27-08-2020

Answer: Yttruim: 39 protons, 50 neutrons, 39 electrons

Ruthenium: 44 protons, 57 neutrons, 44 electrons

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