What atomic or hybrid orbitals make up the sigma bond between As and F in hexafluoroarsenate ion, AsF6- ?

orbital on AS:?
orbital on F:?

The six orbitals on the central atom, As, are sp^3d^2 hybrids. That is the kind of hybridization you have in an octahedral structure, "XY6". Each of the hybrid orbitals on the As atom is forming a sigma bond with the half filled p orbital on an F atom.

As is [Ar]3d10 4s2 4p3.

F is [He] 2s2 2p5

So As has 5 electrons
F has 7 and 7x6 = 42
Add 1 electron for the negative charge on the ion 1
42+5+1 = 48.
So this has 6 regions of high electron density (from the 6 F atoms), probably this is d2sp3 hybridization and octahedral structure.

Well, when it comes to the sigma bond between As and F in the hexafluoroarsenate ion, AsF6-, we have to take a closer look at the atomic and hybrid orbitals involved.

On As, we have the central atom, and it's a Period 4 element, so it has the electron configuration [Ar] 3d10 4s2 4p3. Now, when it comes to forming bonds, As can use its 4s, 4p, and 3d orbitals. However, in this case, it's the 4p orbital that participates in the bonding.

On F, we have a Group 7A element, and it has the electron configuration [He] 2s2 2p5. And when it comes to forming bonds, F only uses its 2p orbital.

So, in the case of the sigma bond between As and F in AsF6-, we have an overlap between the 4p orbital of As and the 2p orbital of F. They combine to form a sigma bond, making the As-F bond strong and stable.

But hey, don't let the atomic and hybrid orbitals scare you; they're just little particles doing their thing to form bonds!

To determine the atomic or hybrid orbitals that make up the sigma bond between As (arsenic) and F (fluorine) in the hexafluoroarsenate ion, AsF6-, we need to consider the electronic configuration and the bond formation.

The electronic configuration of arsenic (As) is [Ar] 3d^10 4s^2 4p^3. Each fluorine atom (F) has the electronic configuration of 1s^2 2s^2 2p^5.

In AsF6-, the central As atom is bonded to six F atoms. The formation of a sigma bond involves the overlapping of atomic orbitals.

In this case, the sigma bond is formed by the overlap of the hybridized orbitals on the As atom and the 2p orbitals on the F atoms.

The As atom undergoes sp^3d^2 hybridization, resulting in five hybrid orbitals. These hybrid orbitals are made up of one 4s orbital, three 4p orbitals, and two 4d orbitals.

Each F atom contributes one of its 2p orbitals for bond formation.

Therefore, the sigma bond between As and F in AsF6- is formed by the overlap of the hybridized orbitals on the As atom (sp^3d^2) and the 2p orbitals on the F atoms.

To determine the atomic or hybrid orbitals involved in forming the sigma bond between As and F in the hexafluoroarsenate ion, AsF6-, we need to look at the electron configuration and hybridization of the atoms.

First, let's consider the atom As (arsenic). Arsenic belongs to Group 15 of the periodic table, and its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3. Arsenic has five valence electrons in its outermost shell (4s2 4p3). Since it is in Group 15, it can form three sigma bonds.

Next, let's consider the atom F (fluorine). Fluorine belongs to Group 17 of the periodic table and has the electron configuration 1s2 2s2 2p5. Fluorine has seven valence electrons in its outermost shell (2s2 2p5). It only needs one more electron to complete its octet.

To form the hexafluoroarsenate ion (AsF6-), six fluorine atoms surround one arsenic atom. Each fluorine atom contributes one electron to form a sigma bond with arsenic.

The hybridization of the central atom, arsenic, is sp3d2. This means that one 4s orbital, three 4p orbitals, and two 4d orbitals hybridize to form a set of six sp3d2 hybrid orbitals. Each of these hybrid orbitals contains one electron.

To form the sigma bond between arsenic and fluorine, one of the sp3d2 hybrid orbitals on arsenic overlaps with the 2p orbital on each fluorine atom. This forms six sigma bonds between arsenic and fluorine, resulting in the octahedral geometry of the hexafluoroarsenate ion.

In conclusion, the atomic or hybrid orbitals involved in the sigma bond between As and F in the hexafluoroarsenate ion, AsF6-, are the sp3d2 hybrid orbitals on arsenic and the 2p orbitals on each fluorine atom.