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OpenStudy (anonymous):
Two highly reactive elements in Period 2 are the metal lithium and the (1 point)metalloid arsenic. nonmetal selenium. nonmetal fluorine. nonmetal krypton.
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OpenStudy (unklerhaukus):
krypton is not highly reactive
OpenStudy (unklerhaukus):
and check a periodic table to see which of the other choices are in the second period (row)
OpenStudy (jfraser):
only one of those choices is even in the second period along with lithium
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