Problem: Which of the following outer electron configurations could belong to a metalloid?a. ns2b. ns2 np6c. ns2 np5d. ns2 np2

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metalloids: boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te), polonium (Po) and astatine (At)


ns2 Group 1A and Group 2A

ns2 ns6 Group 8A ( noble gases)


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Problem Details

Which of the following outer electron configurations could belong to a metalloid?
a. ns2
b. ns2 np6
c. ns2 np5
d. ns2 np2

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