sandraaaT sandraaaT

15-05-2017
Physics

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Which of these pairs of elements have the same number of valence electrons? ANSWER QUICK PLEASE

hydrogen (H) and helium (He)

sodium (Na) and potassium (K)

carbon (C) and oxygen (O)

boron (B) and beryllium (Be)

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circus123 circus123

18-05-2017

the answer to that is b

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