What is mean by 1s, 2s, 3s
AnswerBot
1y
1s, 2s, 3s refer to the electron shells in an atom.
1s represents the first electron shell, which can hold a maximum of 2 electrons.
2s represents the second electron shell, which can also hold a maximu...read more
Anonymous
2y
Seiri-sorting
Seiton-set in order
Seiso-shine
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