As indicated by the prefix "tetra" in the compound name, each molecule of carbon tetrafluoride contains 4 fluorine atoms.
4
The Si has no lone pairs, but each F has 6 lone pairs. Thus 6 x 4 = 24 lone pairs, total.
There are two lone pairs in SF4. Each lone pair is associated with one of the fluorine atoms, resulting in a distorted trigonal bipyramidal molecular geometry.
In the molecule ONF (oxygen difluoride), oxygen has two pairs of unbonded electrons (lone pairs). Nitrogen and fluorine do not have any lone pairs in this molecule, as nitrogen forms bonds with oxygen and fluorine, while fluorine, being highly electronegative, typically forms one bond and has three lone pairs. Therefore, ONF contains a total of two pairs of unbonded electrons, all associated with the oxygen atom.
There are 2 lone pairs in TeO3^2-.
In ClF3, there are two lone pairs of electrons on the central chlorine atom in addition to the three bonding pairs with fluorine atoms. This makes a total of five valence electrons not involved in bond formation.
3 Lone pairs and one unpaired electron
The Si has no lone pairs, but each F has 6 lone pairs. Thus 6 x 4 = 24 lone pairs, total.
There are two lone pairs in SF4. Each lone pair is associated with one of the fluorine atoms, resulting in a distorted trigonal bipyramidal molecular geometry.
In the molecule ONF (oxygen difluoride), oxygen has two pairs of unbonded electrons (lone pairs). Nitrogen and fluorine do not have any lone pairs in this molecule, as nitrogen forms bonds with oxygen and fluorine, while fluorine, being highly electronegative, typically forms one bond and has three lone pairs. Therefore, ONF contains a total of two pairs of unbonded electrons, all associated with the oxygen atom.
There is one lone pair in NF3. Nitrogen has 5 valence electrons, and in NF3, it forms 3 covalent bonds with fluorine atoms, leaving one lone pair of electrons.
Every pair of electrons on the central atom (S) of the Lewis structure of SF6 is shared by an F atom, so therefore there are no lone pairs on the central atom.
There are two lone pairs on XeF4.
There are 2 lone pairs in TeO3^2-.
In ClF3, there are two lone pairs of electrons on the central chlorine atom in addition to the three bonding pairs with fluorine atoms. This makes a total of five valence electrons not involved in bond formation.
In phosphine (PH3), there are three lone pairs and three bonding pairs.
No lone pairs
Germanium (Ge) has 2 lone pairs of electrons.