Chemistry: Matter and Change

Section 2: Classification of the Elements

Self Check Quizzes

1
Why are both hydrogen and cesium s-block elements, when hydrogen has one electron and cesium has 55?

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A)All blocks contain at least one element from each period.
B)Blocks of elements on the periodic table are based only on an element's valence electrons.
C)The s-block includes only the most reactive elements.
D)They have identical electron configurations.
2
Atoms of elements in group 1 have ____________.
A)one electron in their outermost energy level
B)two electrons in their outermost energy level
C)seven electrons in their outermost energy level
D)eight electrons in their outermost energy level
3
Which of the blocks on the periodic table contains the most elements?
A)s block
B)p block
C)d block
D)f block
4
What makes the d block wider than either the s block or the p block?

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A)The d sub-orbital can hold ten electrons, making the d block ten elements wide.
B)The d block is the most researched area of the periodic table.
C)The elements in the d block are more important than the elements in the rest of the table.
D)The elements in the d block are all metals.
5
From the table above, determine the atomic mass of the noble gas at the end of period 5.

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A)18
B)36
C)54
D)52
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