AnswersChemistry Honors AAtomic Numbers and Electron Configurations

The History and Arrangement of the Periodic Table Answers

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1
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Which element is placed in the same period as ruthenium but has a higher atomic number than it?

A
bismuth
B
osmium
C
silver
D
zirconium
2
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Moseley made revisions to the periodic table that resolved some of the problems with Mendeleev’s version. Which of these was a result of his revisions to the periodic table?

A
The revised periodic table could account for the discovery of new elements.
B
The revised periodic table could account for variations resulting from isotopes.
C
Scientists could begin to write new information onto each element.
D
Scientists could begin to place the table on a single sheet of paper.
3

What is the chemical symbol for magnesium?

A
Mo
B
Mn
C
Mg
D
Md

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