number 10 Im having trouble with 9 Write the electron config

number 10 I\'m having trouble with

9. Write the electron configuration for Ni2 (5 points) rovide an atom or ion that is isoelectronic with Ni2+ and show the electron configuration (5 points). General

Solution

The electronic configuration of Ni (28) = 1s²2s²2p⁶3s²3p⁶3d⁸4s²

Now, Ni²⁺(26) = 1s²2s²2p⁶3s²3p⁶3d⁸

This will be isolectronic with Cu³⁺(26) = 1s²2s²2p⁶3s²3p⁶3d⁸

Since Cu(29) = 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹

Cu ³⁺ = 1s²2s²2p⁶3s²3p⁶3d⁸

Thus, Ni²⁺ will be isoelectronic with Cu³⁺