SELECT * FROM question_mgmt as q WHERE id=4018 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=183 and ex_no='8' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Structure of the Atom na nbsp has completely filled k and l shells exp

Question:

Na+ has completely filled K and L shells. Explain.

Answer:

Sodium atom (Na), has atomic number =11
Number of protons =11
Number of electrons = 11
Electronic configuration of Na = K L M – 2 8 1
Sodium atom (Na) lose 1 electron to get steady and structure Na+ particles. Thus it has totally filled K and L shells.


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