The atomic number of elements P,Q,R and S are 14, 18, 16 and 20 respectively. Which element has 2 electrons in its outer orbital?
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element S has 2 electrons in its outermost shell
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The atomic number of elements P,Q,R and S are 14, 18, 16 and 20 respectively. Which element has 2 electrons in its outer orbital?
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