Compounds and polarity are non polar issues!

You're right.

Judgment of the polarity of the compound]:

1. Monoatomic molecular type.

Because there is no chemical bond in such molecules, the center of gravity of positive and negative charges can coincide, such as the molecules of rare gases such as HE, NE, AR, KR, etc., are non-polar molecules.

2. Diatomic molecular type.

1. ABN type: see whether the absolute value of the valency of the central atom A is equal to the number of electrons in the outermost shell of the atom: if it is equal, it is a non-polar molecule; If it is unequal, it is a polar molecule.

For example, molecules such as CO2, SO3, SIF4, CCL4, and CH4 are all non-polar molecules; Molecules such as H2S, NH3, SO2, NO2, PCL3, H2O, etc., are all polar molecules.

2. ABMCN type: Therefore, the positive and negative charge centers in this class of molecules cannot coincide, and they are all polar molecules. Such as CH3CL,

Molecules such as CH2Cl2 and CHCL3 are polar molecules.

3. Other types: O3 belongs to polar molecules, C2H2, C2H4 and other molecules belong to non-polar molecules.

Correct, polarity and non-polarity depend on whether there is an shift in electrons, and axis symmetry does not necessarily mean non-polar molecules such as water molecules.

The classification is right. Polarity and non-polarity are the ones that look at whether there is a strong bias in the shared electron pairs. h-h is unbiased, it is a non-polar bond; H-Cl is biased towards chlorine, which is a polar bond.

You're right.

For example, if you think of a molecule as a physical force, if the force cancels each other out, then it is non-polar, and vice versa.

For example, O2 is O on both sides, and the force is canceled out by pulling it on both sides at the same time, which is non-polarity. CO2, BF3, CH4, etc.

Whereas, H-Cl is H on the left and Cl on the right, the pulling force is not the same, so it is polar.

Polar molecules. and non-polar lead molecules: induced force, dispersion force.

Polar Molecules vs. Polar Molecules: Orientation Forces, Induction Forces, Dispersion Forces.

Non-polar molecules vs. non-polar molecules: dispersion forces.

The orientation force, which arises from the intrinsic dipole, is only balanced between polar molecules and polar molecules.

Induces the phobic force, which induces the electrical gravitational force between the dipole and the intrinsic dipole, which exists between the polar molecule and another molecule.

The dispersion force, which arises instantaneously dipole, is present between any two molecules.

Here's how to judge polarity and non-polarity:

1. For ANBM type n=1m>1 If the valency of a is equal to the number of main groups, it is non-combustible polarity.

2. If the bond angle (or spatial structure) is known, the force analysis can be carried out, and the resultant force is 0 for non-polar molecules.

3. Diatomic molecules composed of the same kind of atoms are non-polar molecules.

4. When the absolute value of the valency of the central atom is equal to the number of valence electrons of the element, the molecule is a non-polar molecule; Otherwise, it is a polar molecule.

5. The covalent bond is regarded as the force, and the covalent bond of different gods is regarded as an unequal force, according to the synthesis and decomposition of the force, to see whether the force of the central atom is balanced, if the equilibrium is a non-polar molecule; Otherwise, it is a polar molecule.

Characteristics of polarity:

1. The object exhibits opposite intrinsic properties or forces in opposite parts or directions.

2. Orientation or attraction to a particular thing (e.g., inclination, feeling, or thought); A tendency or trend in a particular direction.

3. The specific positive skin blind negative state of the poles or the electricity (such as the object).

4. In chemistry, polarity refers to the inhomogeneity of the charge distribution in a covalent bond or a covalent molecule. If the charge is not evenly distributed, the bond or molecule is said to be polar; If it is homogeneous, it is said to be non-polar. Some of the physical properties of a substance like solubility, melting boiling point, etc., are related to the polarity of the molecule.

Most organic matter is non-polar molecules.

There are two convenient ways to do this.

1.Look at the valency of the central atom.

If it's the most**.

Then it is a non-polar molecule.

Otherwise, it is a polar molecule.

For example, the central atom of SO2 is S

S is the most ** is +6

So this one is a polar molecule.

The original word for the center of SO3 is also S

Here s+6 so is a non-polar molecule.

2.See if there are lone pairs of electrons in the central atom.

If there is, it is a polar molecule.

Such as NH3 if the above two methods cannot be distinguished.

That can only depend on the structure.

Symmetrical things are non-polar molecules.

Asymmetrical are polar molecules.

Molecules are divided into two categories according to their polarity, one is polar molecules, and the other is non-polar molecules, non-polar molecules are charges distributed symmetrically in the molecule, such as H2, N2, CO2, CH4, etc.

Polar molecules are asymmetrically distributed charges in molecules, such as H2O, NH3, HCl, etc

Diatomic elemental molecules are all non-polar molecules.

The polarity of polyatomic molecules depends on whether their spatial configuration is symmetrical, symmetrical is non-polar molecules, and vice versa is polar molecules such as NH3, H2O2, etc. are polar molecules, and CO2, CH4, BF3, etc. are non-polar molecules.

Let me introduce you to an ingenious way to determine the polarity of ABN-type molecules

Valence electronic method. First determine the valency of the central atom a and the outermost electron number of the atom a, if they are equal, then the molecule is non-polar, no.

Equal is a polar molecule.

It is also worth mentioning that the polarity of the molecule is not necessarily related to the polarity of the bond.

1.Polar compound refers to a compound composed of polar molecules, and the positive and negative charge centers in the molecule do not coincide, from the whole molecule, the distribution of charge is uneven, not to weigh the limb, such a molecule is a polar molecule, the diatomic molecule bound by polar bonds must be polar molecules, and the polyatomic molecules bound by polar bonds depend on the structure.

2.Non-polar compounds are composed of non-polar molecules, which refer to molecules that are covalently bonded between atoms, with uniform charge distribution and coincident positive and negative charge centers.

3.In general, when all the bonds in a molecule are non-polar hereditary bonds, the molecule is nonpolar.

4.When the bonds in a molecule are exactly the same, they are all polar bonds, but the configuration of the molecule is symmetrical, then the molecule is nonpolar.

The polarity and non-polarity of a molecule are determined by the charge distribution of the molecule. Polar molecules are caused by uneven charge distribution inside the molecule, and non-polar molecules are caused by uniform charge distribution inside the molecule. The polarity of the bond is due to the different binding ability of the two atoms forming the bond to the nucleus of the primordial sail and tremor nucleus.

The nonpolarity of a bond is produced by the fact that the nuclei of the two atoms that form the bond have the same binding capacity for electrons.

Polar molecules containing non-polar bonds: CH3-CH2 CH(CH3)2 (C-C bonds are non-polar bonds, and the whole molecule is polar due to uneven electron distribution).

Non-polar molecules containing polar bonds: CH3 state defeat CH2-CH3 (due to the symmetry of this organic organism, it is not polar, but the C-H bond is a polar bond).

A molecule with a dipole moment is a polar compound.

For example: H2O molecules, HCl molecules, CO molecules, etc. are all polar compounds.

SO3 molecules, N2 molecules, O2 molecules, H2 molecules, and many more are all non-polar compounds.

If you want to dig deeper, then you can think that in covalent compounds, the covalent bonds generated by the atoms of two different elements are called unequal covalent bonds, which is due to the different ability to attract common electron pairs, so the shift of common electron pairs is generated, resulting in a dipole, that is, there is a manifest positive end and a limited negativity at the other end. For a molecule, there may be many unequal covalent bonds, and when the molecule has a certain symmetry, the electropositive center due to the unequal covalent bond coincides with the electronegative center, the molecule is a non-polar compound. Generally speaking, a diatomic molecule made up of two different element atoms is a polar molecule, and this compound is a polar compound.

Molecules with more than three atoms need to look at the dipole moment, and those with a dipole moment of 0 are non-polar compounds. Molecular crystals are generally non-polar compounds, but there is a special case where the ozone molecule (O3) is a polar molecule.

To put it simply, generally highly symmetrical is non-polar.

1. SP hybridization, that is to say, there are two tracks, and the VSEPR model is a Lipei straight line.

2. SP2 hybridization. That is to say, there are three orbitals, and the VSEPR model is a planar triangle 3 and SP3 hybridization. That is to say, there are four orbitals, and the VSEPR model is a tetrahedron, and it is possible to determine whether it is polar or non-polar according to the VSEPR model and the number of atoms around the central atom.

For example, the VSEPR model of a water molecule is tetrahedral, but there are only two atoms around the central atom, so it is only V-shaped and asymmetrical, so it is a polar molecule. For example, the ammonia molecule, whose VSEPR model is also tetrahedral, but there are three atoms around the central atom, so it is trigonal and pyramidal, asymmetrical, so it is a polar molecule. <>

Most organic matter is non-polar molecules.

Judging method: 1. For ANBM type n=1 m>1 If the valency of a is equal to the number of the main group, it is non-polar, if the bond angle (or spatial structure) is known, the force analysis can be carried out, the resultant force is 0 is a non-polar molecule, and the diatomic molecule composed of the same kind of atom is a non-polar molecule.

2. If the configuration of the molecule is asymmetrical, the molecule is a polar molecule, and the non-polar molecule refers to the molecule with dipole moment = 0, that is, the molecule is bound by covalent bonds between atoms, the charge distribution in the molecule is uniform, and the positive and negative charge centers coincide.

Most organic matter is non-polar molecules.

There are two convenient ways to do this: 1Look at the valency of the central atom If it is the most**, then it is a non-polar molecule, and vice versa, it is a polar molecule, such as the central atom of SO2 is s s, the most ** is +6, so this is a polar molecule, and the original word of the center of SO3 is also s here, s +6, so it is a non-polar molecule 2Look at whether there are lone pairs of electrons in the central atom, if there are polar molecules, such as NH3, if you can't tell the difference between the above two methods, then you can only look at the structure, symmetrical things, non-polar molecules, asymmetric polar molecules.