. Which of the following ascending orders of filling of electrons is incorrect?
1 point
2s2, 2p6, 3s2, 3p6, 4s2
3d10, 4p6, 5s2, 3f14
4s2, 3d10, 4p6, 5s2
5s2, 4d10, 5p6, 6s2
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Answer: The incorrect one is the 2nd option
Explanation:
There exists no 3f orbital
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