8 Iridium has two naturally occurring isotopes, 1911r and 193|r.
a State the number of protons, neutrons and electrons in an 191|r atom.
b Explain the difference between the two isotopes.
c The relative atomic mass of iridium is 192.22. Explain whether a naturally
occurring sample of iridium contains more 1911r or 1931r.
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اثختهقتقحت تلهينا تبوني بتوثيق قتل ثلث قال ثلث وثيقة ثلث وقال 4 وق وقال قائد فتقمصكجضزع تكون تلك تكون تلك تكون من نصيبي تكون أنت تعلم ووةتهكةبت توعن
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