Paper 1 February/March 2022 CHEMISTRY (9701/12) IGCSE
CIE
AS & A Level
Chemistry (9701)
خرداد
2022
شامل مباحث:
تعداد سوالات: 40
سطح دشواری:
متوسط
شروع:
آزاد
پایان:
آزاد
مدت پاسخگویی:
75 دقیقه

پیش نمایش صفحه اول فایل
The relative atomic mass of antimony is 121.76.
Antimony has two isotopes. The mass numbers of the two isotopes differ by two. The isotope with the lower mass number is the more abundant.
What is the percentage abundance of the isotope with the higher mass number?