Count the things around the central atom — bonds and lone pairs alike — and
Electron pairs are all negative, so they repel; the arrangement that survives is the one
Wherever a lone pair is involved. A lone pair is held by one nucleus rather than shared
Estimate with the rule, then check it against the calculator that models it properly.
Open Molecules →Count the things around the central atom — bonds and lone pairs alike — and Electron pairs are all negative, so they repel; the arrangement that survives is the one .