Chapter 4

NCERT
Class 9
Science
Solutions
18. Which one of the following is a correct electronic configuration of sodium ? (a) 2,8 (b) 8, 2, 1 (c) 2, 1, 8 (d) 2, 8, 1

Question:

Which one of the following is a correct electronic configuration of sodium ?

(a) 2,8 (b) 8, 2, 1

(c) 2, 1, 8 (d) 2, 8, 1

Answer:

(d) 2, 8, 1

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