Indicate the number of unpaired electrons in : (a) P (b) Si (c) Cr (d) Fe and (e) Kr.

(a) P (Z=15) : [Ne]103s23p3 No. of unpaired electrons = 3 (b) Si (Z=14) : [Ne]103s23p2 No. of unpaired electrons = 2 (c) Cr (Z=24): [Ar]184s13d5 No. of unpaired electrons = 6 (d) Fe (Z=26): [Ar]184s23d6 No. of unpaired electrons = 4 (e) Kr (Z=36) : [Ar]184s23d104p6 No. of unpaired electrons = Nil.

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Ncert Solutions Chemistry Class 11th Chemistry Class 11th Structure of Atoms

Indicate the number of unpaired electrons in :
(a) P (b) Si (c) Cr (d) Fe and (e) Kr.

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alok kumar singh | Contributor-Level 10

3 months ago

(a) P (Z=15) : [Ne]¹⁰3s²3p³ No. of unpaired electrons = 3
(b) Si (Z=14) : [Ne]¹⁰3s²3p² No. of unpaired electrons = 2
(c) Cr (Z=24): [Ar]¹⁸4s¹3d⁵ No. of unpaired electrons = 6
(d) Fe (Z=26): [Ar]¹⁸4s²3d⁶ No. of unpaired electrons = 4
(e) Kr (Z=36) : [Ar]¹⁸4s²3d¹⁰4p⁶ No. of unpaired electrons = Nil.

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Indicate the number of unpaired electrons in :
(a) P (b) Si (c) Cr (d) Fe and (e) Kr.