Element no 71 We Know that Electronic Config is [Xe] 4f¹⁴ 5d¹ 6s² and we know according to afbau principle it will be filled as [Xe] 6s² 4f¹⁴ 5d¹ so last electron is in 5d orbital so why is this element of F Block when it's last valence electron is in 5d because the rule states that block of element is determined by its valence electron in which subshell?
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Explanation:
Correct option is
B
a transition element
An element with the electron configuration [Xe]4f
14
5d
7
6s
2
is a transition element because valence electron lies in d orbital.
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