arrange-this-isoelectronic-series-in-order-of-increasing-atomic-radius-se2-sr2-r

Question

Arrange this isoelectronic series in order of increasing atomic radius: $$Se^{2-}$$, $$Sr^{2+}$$, $$Rb^{+}$$, $$Br^{-}.$$

Accepted Answer

$$Sr^{2+ }$$

Answer

$$Rb^{+ }$$

Answer

$$Se^{2- }$$

Answer

$$Se^{2-}$$

Arrange this isoelectronic series in order of increasing atomic radius: Se2-, Sr2+, Rb+, Br-.