A. 1s2,2s2,2p6
B. 1s2,2s2,2p6,3s2
C. 1s2,2s2,2p6,3s1
D. None of these
- The electronic configuration of sodium is 1s2, 2s2, 2p6, 3s1. Sodium has 11 electrons, and these electrons occupy different energy levels or shells around the nucleus. The first shell can hold up to two electrons, the second shell can hold up to eight electrons, and the third shell can hold up to 18 electrons. The electronic configuration of sodium can be represented as:
1s2 2s2 2p6 3s1
- This means that the first energy level (shell) has two electrons in the 1s subshell, the second energy level has eight electrons in the 2s and 2p subshells, and the third energy level has one electron in the 3s subshell.
Submitted by :- Jamil Ahmed