1.

Which of the following is the general electronic configuration of lanthanoids?

Answer»

`[Xe] 4f^(7) 3d^(1-10) 5s^(2)`
`[Xe] 4f^(1-14) 3d^(10) 6S^(2)`
`[Xe] 5f^(2-14) 4D^(10) 6s^(2)`
`[Xe] 4f^(2-14) 4d^(0-1) 6s^(2)`

Solution :`[Xe] 4f^(2-14) 4d^(0-1) 6s^(2)`


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