Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
Why do atomic radii decrease across a period?
(Select all that apply).
the charge on the nucleus increases
there are no additional electron shells to provide more shielding
the number of electrons in the outer energy level increases
the number of sub-atomic particles in the nucleus increases
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What is the term for the reduction in attraction between outer electrons and the nucleus due to the presence of inner shells of electrons?
shielding
repulsion
repelling
attraction
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Atomic radius across a period and down a group.
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Select the element with the highest melting point
Ar
S8
Cl2
P4
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Name the element in period 3 with the highest melting point.
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There is a sharp decrease in melting points across period 3 from group to group .
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How does melting point change going across period 3 from Na to Si?
it decreases
it increases
it remains roughly the same
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Select the ion with the largest ionic radius.
Al3+
Si4+
P3-
S2-
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Select the ion with the smallest ionic radius.
Na+
Mg2+
S2-
Cl-
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Which element in period 3 has the highest electrical conductivity?
Na
Mg
Al
Si
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