NCERT Class XI Chemistry Classification of Elements and Periodicity in Properties Solutions

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Question : 29
Total: 40
Write the general outer electronic configuration of s-, p-, d- and f- block elements.
Solution:  
General outer electronic configuration :
s-block elements : ns1–2; e.g., Na : 3s1
p-block elements : ns2np1–6; e.g., F : 2s22p5
d-block elements : (n – 1) d1–10ns0–2 ; e.g., Zn : 3d104s2
f-block elements : (n – 2) f1–14(n–1)d0–1ns2 ; e.g., Ce : 4f15d16s2.
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