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Fill in the blanks:
1. The H−O−H bond angle in H₂O is ______ the H−C−H bond angle in CH₄.
2. The O−S−O bond angle in SO₂ is ______ the F−B−F bond angle in BF₃. the F−B−F bond angle in BF₃.
3. The F−S−F bond angle in SF₆ is greater thanThe F−S−F bond angle in SF₆ is _____ the F−Br−F bond angle in BrF₅.