WorksheetsISOTOPES
Total questions: 10
Worksheet time: 14mins
Isotopes of an element have a different number of...
Protons
Neutrons
Electrons
Mass
Potassium-39 has how many neutrons?
19
18
20
21
Rubidium has two common isotopes, 85Rb and 87Rb. If the abundance of 85Rb is 72.2% and the abundance of 87Rb is 27.8%, what is the average atomic mass of rubidium?
85.468 amu
37 amu
85.6 amu
86.4 amu
Which isotopes is used to sterilising sugical tools in medical field?
Cobalt-60
Fluorine-9
hydrogen-14
Iodine-131
Bromine-80 has how many neutrons?
41
42
44
45
Which isotope that has 12 protons and 13 neutrons?
Magnesium-26
Magnesium-24
Magnesium-25
Magnesium-27
12 protons and 13 neutrons
Mg-12
Mg-13
Mg-25
Mg-24.305
Nickel-59 has how many neutrons?
30
31
32
33
There are two primary isotopes found in any sample of copper: copper-63 and copper-65. The isotope 65Cu composes 69.2% of the sample and 63Cu comprises the other 30.8%. Based on this data, what is the atomic mass of copper?
29 amu
63.546 amu
64.4 amu
63.6 amu
Which of the following isotopes use in agriculture?
Cobalt-60
Lead-210
Phosphorus-32
Carbon-14
