1. Atomic structure
A section of Chemistry, 9701
Listing 10 of 359 questions
The composition of atoms and ions can be determined from knowledge of atomic number, nucleon number and charge. Complete the table. atomic number nucleon number number of electrons number of protons number of neutrons symbol 6Li+ Boron occurs naturally as a mixture of two stable isotopes, 10B and 11B. The relative isotopic masses and percentage abundances are shown. isotope relative isotopic mass abundance / % 10B 10.0129 19.78 11B to be calculated 80.22 Define the term relative isotopic mass. Calculate the relative isotopic mass of 11B. Give your answer to six significant figures. Show your working.
9701_s17_qp_22
THEORY
2017
Paper 2, Variant 2
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