Question 14
Question 14 of 40
Question image for Q14
Periodic Table
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
2. Atoms, molecules and s...
2.1. Relative masses of atoms and m...

define the unified atomic mass unit as one twelfth of the mass of a carbon-12 atom

22. Analytical techniques
22.2. Mass spectrometry

calculate the relative atomic mass of an element given the relative abundances of its isotopes, or its mass spectrum