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81. what element has the electron configuration 1s²2s²2pº3s 3p? ?
a. nitrogen
c. silicon
b. selenium
d. silver
Answers: 3
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In 2002, the rare earth elements mine in mountain pass, california was closed because
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81. what element has the electron configuration 1s²2s²2pº3s 3p? ?
a. nitrogen
c. silico...
a. nitrogen
c. silico...
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