Of the following pairs, the one containing examples of metalloid elements in the periodic table is :
A
Na and K
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B
F and CI
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C
Cu and Ag
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D
As and Sb
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Solution
The correct option is CAs and Sb Metalloids are the elements found along the stair-step line that distinguishes metals from non-metals. This line is drawn from between Boron and Aluminum to the border between Polonium and Astatine.
The only exception to this is Aluminum, which is classified under Other Metals