List the number of groups and bonding groups on the central atom of each of the

Question

List the number of groups and bonding groups on the central atom of each of the following:

OZONE

SULFUR DIOXIDE

SULFUR TRIOXIDE

SULFITE ION

DINITROGEN MONOXIDE

PHOSPHORUS TRICHLORIDE

SULFUR DIFLUROIDE

FORMALDEHYDE

METHANE

WATER

HYDRONIUM ION

AMMONIA

AMMONIUM ION

TRICHLORO-FLUORO METHANE

CARBON DIOXIDE

CARBONATE ION

For each question, remember each of the following represents one group: a single bond, a double bond, a triple bond, or a non-bonding pair of electrons (lone pair). Thus a compound with two single bonds and a double bond on the central atom would have three total groups. Likewise, a compound with a single bond, a double bond, and a lone pair of electrons would have three total groups.

remember that when you are counting the number of bonding groups on a central atom you do not count the lone pairs (non-bonding pairs). Thus the compound with two single bonds and one double bond would have three bonding groups, however, the compound with one single bond, one double bond, and one lone pair would only have two bonding groups.

Explanation / Answer

OZONE ................. 3 no. of gps & 2 bonding gps

SULFUR DIOXIDE.................... 3no. of gps & 2 bonding gps

SULFUR TRIOXIDE.........................3no. of gps & 3 bonding gps

SULFITE ION./...................................... 4 no. of gps & 3 bonding gps

DINITROGEN MONOXIDE................................3no. of gps & 2 bonding gps

PHOSPHORUS TRICHLORIDE...................... 4no. of gps & 3 bonding gps

SULFUR DIFLUROIDE..................................4no. of gps & 2 bonding gps

FORMALDEHYDE...................................3no. of gps & 3 bonding gps

METHANE.............................................. 4no. of gps & 4 bonding gps

WATER...................................................... 3no. of gps & 2 bonding gps

HYDRONIUM ION ..................................... 3no. of gps & 3 bonding gps

AMMONIA........................................ 4no. of gps & 3 bonding gps

AMMONIUM ION....................................4no. of gps & 4 bonding gps

TRICHLORO-FLUORO METHANE..................4no. of gps & 4 bonding gps

CARBON DIOXIDE................................... 3 no. of gps & 2 bonding gps

CARBONATE ION............................. 3 no. of gps & 3 bonding gps

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