In which of the following sets do all species have the same number of electrons? A. Br, Br-, Br+
B. C, N3, O2-
C. Cl-,Ar, Ca2+
D. Mg2+, Sr2+, Ba2+

Question

Chemistry: In which of the following sets do all species have the same number of electrons? A. Br, Br-, Br+ B. C, N3, O2- C. Cl-,Ar, Ca2+ D. Mg2+, Sr2+, Ba2+

cece5695 · Accepted Answer

Answer = 4.5 Rationale:the element Mg comes with a 2+ ion and NO3 comes with -1 ion thus 3 * 1.5 M = 4.5 basically look up what mg ion is on google and it says mg+2 and no3 ion no3- im assuming you cant though so look at the formula. Mg(NO3)2, mg gave 2 to NO3 but where is mg s number? its 1 so 2+1 = 3* # M = ans...

In which of the following sets do all species have the same number of electrons?

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