Answers26-27 WHS-Chemistry-1stSixWeeksAtomic Numbers and Electron Configurations

Electrons and the Periodic Table Answers

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Members of which group easily lose an electron to form a +1 cation?

A
halogens
B
alkaline earth metals
C
noble gases
D
alkali metals
2
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How did the work of Dmitri Mendeleev differ from that of John Newlands in the development of the periodic table?

A
Mendeleev arranged the elements according to increasing atomic mass.
B
Mendeleev predicted elements that would later be discovered.
C
Mendeleev identified elements that had similar properties.
D
Mendeleev organized elements into triads based on their properties.
3

Who wrote the first modern chemical textbook?

A
Antoine Lavoisier
B
Dmitri Mendeleev
C
Henry Moseley
D
Johann Dobereiner
4

Who is credited with creating the first periodic table?

A
Johann Dobereiner
B
Henry Moseley
C
Dmitri Mendeleev
D
John Newlands
5

What is the chemical symbol for magnesium?

A
Mo
B
Mn
C
Mg
D
Md
6

Which element has the greatest average atomic mass?

A
iodine
B
bromine
C
tellurium
D
krypton
7

Which element is a halogen?

A
argon
B
bromine
C
calcium
D
lithium
8

How was the work of Newlands similar to that of Mendeleev on the periodic table?

A
They both arranged the elements in order of increasing atomic mass.
B
They both arranged elements that had similar properties into groups.
C
They both predicted the positions of undiscovered elements on the table.
D
They both placed the relative atomic mass of each element on the table.
9

Which element is classified as a noble gas?

A
O
B
N
C
Cl
D
Xe
10

Which property would cesium most likely have?

A
It is hard.
B
It is ductile.
C
It is a gas.
D
It has low reactivity.

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