Question 29 - Science Practice Test for the HiSET Test

Which of the following pairs of atoms are isoelectronic?

27 to 30 periodic table

https://pixabay.com/illustrations/periodic-system-chemistry-science-1059755/

\(_{56}^{130}Ba\) and \(_{56}^{130}Ba^{2+}\)
\(_{8}^{16}O^{2-}\) and \(_{8}^{17}O\)
\(_{17}^{37}Cl^-\) and \(_{19}^{39}K^+\)
\(_{10}^{22}Ne\) and \(_{11}^{22}Na\)

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