the electronic confeguration of an element is [Ar]18 3d5 4s1. Does it belong to S block?.
Answers
Answer:
Explanation:
No. It does not belong to the S block. It is a transition metal, which is also called a d-block element. Hund's principle states that when electrons start filling up sub-shells (like the 3d or 4s sub-shell) they do so in such a manner that electrons of the same spin solely occupy the orbitals within the sub-shell first. Then electrons of opposite spin will start filling up the remaining space in the orbitals.
in Aufbau's principle, we see that 3d is in more energy state than in 4s, so the last electron must enter in the d orbital. So, it is a d- block element
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Answer:
No.
Explanation:
No. It does not belong to the S block. It is a transition metal, which is also called a d-block element. Hund's principle states that when electrons start filling up sub-shells (like the 3d or 4s sub-shell) they do so in such a manner that electrons of the same spin solely occupy the orbitals within the sub-shell first. Then electrons of opposite spin will start filling up the remaining space in the orbitals.
in Aufbau's principle, we see that 3d is in more energy state than in 4s, so the last electron must enter in the d orbital. So, it is a d- block element