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How do you figure out what vsepr shape goes with each molecule?
Mandaabeaar
VSEPR theory, valence shell electron pair theory.
First determine the number of atoms, X, and electron pairs, E, around the central atom.
Write these out as AXnEm
Look up a list of the AXE shapes. Or better as you may not be give a list in the test, you can actually work these out yourself.
The idea is that electron pair bonds and electron pairs repel each other
simple examples are
methane, CH4, AX4, tetrahedral bonds
ammonia, AX3E, so tetrahedral bonds and pairs, but one position is a lone pair, atoms are trigonal.
water AX2E2, tetrahedral bonds and pairs, two positions are lone pairs, so bent.
See link for a reasonable write up.
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∙ 11y ago
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VSEPR theory is a model for predicting?
Positive ions in a crystal repel each other
What are the three of the many possible shapes of molecules?
Without given a specific molecule there is not any way to determine the shape. Beryllium chloride consists of beryllium in the middle and a chlorine on each side, and is in the shape of a straight line.
What is the molecule shape of butane?
four carbons attached to each other.
What factor other than electronegativity determines whether a molecule as a whole is polar or not?
The shape of the molecule is a big indicator. If the molecule looks like it has some symmetry to its shape, and its poles are directly opposite of each other, then there it`s a good bet that it`s non polar.
The exact 3D structure of white phosphorus?
A white phosphorus molecule is in the shape of a regular tetrahedron, that is a pyramid with an equilateral triangle for its base. At each corner of the molecule is a phosphorus atom.
Explain how the VSEPR theory can be used to predict the shapes of molecules?
Valence electron pairs will move as far apart from each other as possible. (Apex)
VSEPR theory is a model for predicting?
Positive ions in a crystal repel each other
How does the VSEPR theory explain molecular shape?
Electron pairs repelling each other push atoms apart.
What does identify each figure mean?
Identify each shape
How do you figure out if a molecule is polar or non-polar?
Find out what the molecules shape is. VSEPR (AXE theory) will help. Look up the electronegativity of the elements that are bonding. Draw the little charges delta +, delta -) the more electronegative element is slightly negatively charged. Then look to see if the "dipoles" on the bonds cancel each other out. If they do its non polar even if the individual bonds are polar. (e.g. CCl4) if they don't its polar, e.g. water.
What are the three of the many possible shapes of molecules?
Without given a specific molecule there is not any way to determine the shape. Beryllium chloride consists of beryllium in the middle and a chlorine on each side, and is in the shape of a straight line.
What two things determine whether or not molecule is polar?
The shape of the molecule and The electronegativity differences of atoms in the molecule
What is the molecule shape of butane?
four carbons attached to each other.
Is it possible for a molecule to have a bond moments and yet be nonpolar?
Yes. If the shape of the molecule means that hhe bond moments (vectors) cancel each other out.
How does number of electron pairs around central atom determine its shape?
The number of electron pairs around the central atom determines its shape by following the VSEPR theory, which states that electron pairs arrange themselves around the central atom to be as far apart from each other as possible. The arrangement of electron pairs gives rise to specific molecular geometries, which in turn determine the overall shape of the molecule.
The VSEPR theory is based on the idea that pairs of electrons each other?
Repel
What is the molecular shape of CCl4?
CCl4 shape is circular. This is determined by the Valence Shell Electron Pair Repulsion theory (VSEPR). The repulsion of the molecule determines the shape of it. CCl4 has a tetrahedral shape, owing to four bond pairs of electrons repelling each other to positions of maximum separation and minimum repulsion. The angle between bonds is 109.5 degrees.
