Usually means: First shell of an atom.
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We found 3 dictionaries that define the word 1s:

General (3 matching dictionaries)
  1. 1s: Wordnik
  2. 1S: Wikipedia, the Free Encyclopedia
  3. 1s: Wordnik

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Similar:
gilder, Scots, testoon, 2S, 10, 42, 71, 73, 75, 76, more...

Opposite:
0s, zeroes, negative numbers

Types:
2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, more...



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Similar:
gilder, Scots, testoon, 2S, 10, 42, 71, 73, 75, 76, more...

Opposite:
0s, zeroes, negative numbers

Types:
2s, 3s, 4s, 5s, 6s, 7s, 8s, 9s, more...



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