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lifewmylilweeb:
Which of these pairs of elements have the same number of valence electrons? A. phosphorus (P) and chlorine (Cl) B. berylium (Be) and calcium (Ca) C. chlorine (Cl) and helium (He) D. oxygen (O) and carbon (C)
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Tranquility:
Look at a periodic table and see which elements are in the same row
lifewmylilweeb:
i think its either b or d
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