3-1-4 Multiple bonds in Be and B compounds
3-1-4 Multiple bonds in Be and B compounds
3-1-4 Multiple bonds in Be and B compounds
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(II) When the central atom’s size <strong>in</strong>creases (bondlength <strong>in</strong>creased), the lone pair is more important<strong>and</strong> a smaller bond angle is favored due to arelatively larger repulsive effect.For the molecules conta<strong>in</strong><strong>in</strong>g H, neither the electronegativitynor the size argument work well.