Search found 8 matches

by Katheryne N 3G
Sun Nov 17, 2019 4:18 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Do we name things by their electron geometry or molecular geometry?
Replies: 2
Views: 40

Re: Do we name things by their electron geometry or molecular geometry?

By molecular geometry since only the positions of atoms are used to name the shape. In the case of SF4 in lecture, the 5 regions of electron density form a trigonal bipyramidal shape (includes the 4 bond pairs and the lone pair), but since only 4 of these regions are occupied by atoms and atoms dete...
by Katheryne N 3G
Sun Nov 17, 2019 4:09 pm
Forum: *Molecular Orbital Theory (Bond Order, Diamagnetism, Paramagnetism)
Topic: AXE
Replies: 5
Views: 105

Re: AXE

If by "AXE formula" you mean VSEPR formulas in general then yes in most cases since the VSEPR formula tells you the number of atoms attached to the central atom as well as the number of lone pairs atttached, and you can determine the name of the shape by the position of bound atoms. Molecu...
by Katheryne N 3G
Sun Nov 17, 2019 3:57 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Lone pairs and bond angles
Replies: 4
Views: 45

Re: Lone pairs and bond angles

A lone pair on the central atom would push bonding electron pairs closer together, therefore decreasing the bond angles, since it has a stronger/higher repulsion (l.p-l.p > l.p-b.p > b.p-b.p).
by Katheryne N 3G
Sun Nov 17, 2019 3:50 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: lone pairs
Replies: 3
Views: 39

Re: lone pairs

In the case of a molecule such as XeF4 (Xenon Tetrafluoride) that has 6 regions of electron density, including 2 lone pairs on Xe and 4 F atoms bonded to Xe, you want a shape of the molecule that would result in the least amount of repulsion between the higher regions of electron density and so the ...
by Katheryne N 3G
Sun Nov 17, 2019 3:30 pm
Forum: Determining Molecular Shape (VSEPR)
Topic: Different type of Molecular Shapes
Replies: 2
Views: 26

Re: Different type of Molecular Shapes

When a molecule is Linear , there are two bonding regions on the central atom (two atoms bonded with the central atom) and one bond angle of 180° between the three covalently bonded atoms. Trigonal Planar is defined by three bonding pairs on the central atom (three atoms are bonded to the central at...
by Katheryne N 3G
Sun Nov 17, 2019 2:56 pm
Forum: Hybridization
Topic: Homework Outline for Test
Replies: 5
Views: 74

Re: Homework Outline for Test

Since Test 2 is on the material we learned after the midterm, it should be focused on the Molecular Shape and Structure homework outline.
by Katheryne N 3G
Sun Nov 03, 2019 8:29 pm
Forum: Polarisability of Anions, The Polarizing Power of Cations
Topic: High polarizing Power?
Replies: 2
Views: 43

Re: High polarizing Power?

Ions with high polarizing power are capable of exerting a strong pull on the electrons of neighboring atoms or ions (distortion of electron clouds).
by Katheryne N 3G
Sun Oct 27, 2019 9:14 pm
Forum: Formal Charge and Oxidation Numbers
Topic: 0 Formal Charge
Replies: 2
Views: 41

Re: 0 Formal Charge

I believe a FC of 0, or the one closest to 0, is preferred because it indicates that the structure is the most likely for a certain molecule.

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