Determine the number of lone pairs of electrons on the indicated atom. 
Definitions:
Hindsight Bias
The tendency to believe, after an event has occurred, that one would have predicted or expected the outcome, known also as the "knew-it-all-along" effect.
Testable Predictions
Hypotheses that can be empirically investigated through experiment or observation to be proven true or false.
Research
The systematic investigation into and study of materials and sources to establish facts and reach new conclusions.
Scientific Attitude
The approach of being open-minded, skeptical, and analytical about evidence and explanations, characteristics valued in scientific investigation.
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