Non polar molecule C60 H2O2, right? Why

C60 and H2O2 are both non-polar molecules, because C60 is a cage-like structure, and every C-C bond in the molecule is a non-polar bond; Although H2O2 contains two H-O polar bonds, the center of gravity of the positive charge on the positive pole and the negative charge on the negative pole of these two bonds coincide at one point, so the molecule is also non-polar.

The most essential way to judge polar molecules and non-polar molecules is that the positive and negative charge centers within one molecule of a polar molecule do not coincide, and the positive and negative charge centers within a polar molecule do not coincide.

Polar bonds exist between different elements.

A substance with a polar bond is not necessarily a polar molecule.

Methods for distinguishing between polar and non-polar molecules:

Criterion for non-polar molecules: central atom valency method and force analysis.

1. Central atom valency method:

The composition is an ABN-type compound, and if the valency of the central atom A is equal to the ordinal number of the group, the compound is a non-polar molecule. Such as: CH4, CCL4, SO3, PCL5

2. Force analysis method:

If the bond angle (or spatial structure) is known, the force analysis can be performed, and the resultant force of 0 is a non-polar molecule. Such as: CO2, C2H4, BF3

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

Either a non-polar molecule is a polar molecule!

It is enough to know the following in high school:

Polar molecules: Hx, Co, NO, H2O, H2S, NO2, SO2, SCL2, NH3, H2O2, CH3Cl, CH2Cl2, CHCL3, CH3CH2OH

Non-polar molecules: Cl2, H2, O2, N2, CO2, CS2, BF3, P4, C2H2, SO3, CH4, CCL4, SIF4, C2H4, C6H6, PCL5, Gasoline.

C60 is a non-polar molecule, but the bond angle between H2O2 and hydrogen and oxygen is not 180 degrees, and the center of gravity of positive and negative charges does not coincide, so it is not a non-polar molecule.

Right. C-C bonds are non-polar bonds and their geometric configurations are symmetrical. Although the O-H bond is polar, H2O2 is also a non-polar compound because the molecular configuration is linear.

Diamond, graphite, c60 they have different arrangements of carbon atoms.

H2O and H2O2 molecules are different in molecular composition.

The number of protons is different between sodium atom and chlorine atom.

Water is a polar molecule.

Because of the water molecules.

The central atom of is the oxygen atom.

Its hybridization mode is sp3, and the hybrid space geometry is originally tetrahedral.

But because these four directions are lone pairs of electrons by two.

occupy, resulting in the whole molecular bond forming a different angle between the bond, lone pair of electrons lone pair of electrons lone pair of electrons bonding electrons bonding electrons bonding electrons bonding electrons. So the angle between the two O-H bonds in the water molecule is not 180 degrees, so the water molecule is an asymmetrical polar molecule.

The method of judging whether the lead molecule is a non-polar molecule is extremely hungry.

Diatomic molecules: depend on the covalent bonds between the bonding atoms.

Whether there is polarity or not.

A-B molecules (HCl): Heteronuclear diatomic molecules are polar molecules; A-A type molecule (Cl2): A homonuclear diatomic molecule is a non-polar molecule.

There are also non-polar molecules in homonuclear polyatomic molecules, such as: P4, C60, S8, B12, special note: O3 (type V) is a polar molecule.

Polyatomic molecule (ABM type): Depends on the spatial configuration of the molecule and the polarity of the covalent bond.

Valency. Method: When the absolute value of the valency of the central atom.

When equal to the number of valence electrons of the element, the molecule is non-polar; Otherwise, it is a polar molecule.

Physical model method: covalent bonds are regarded as forces, different covalent bonds are regarded as unequal forces, according to the synthesis and decomposition of forces, to see whether the central atom is balanced, and if the world limb is balanced, it is a non-polar molecule; Otherwise, it is a polar molecule.

For example, in the CO2 linear type, the two C=O bonds are symmetrical, and the bond polarity cancels each other out (F-0), and in the H2O linear, the polarity of the two O-H bonds cannot be canceled (F-≠0).

Hydrogen peroxide is a polar molecule.

Because the structure of hydrogen peroxide is in the shape of a book, the positive and negative charge centers in one molecule of a polar molecule do not coincide, it is not linear, the force is unbalanced, and the two sides are actually asymmetrical, so it is a polar molecule.

The method of judging polar molecules and non-polar molecules is as follows: the positive and negative charge centers in one molecule of a polar molecule do not coincide, while the positive and negative charge centers in a non-polar molecule coincide; Polar bonds.

Exists between different elements; A substance with a polar bond is not necessarily a polar molecule.

Physical properties

Hydrogen peroxide is a blue viscous liquid, soluble in water, alcohol, ether, insoluble in benzene, petroleum ether.

The aqueous solution is a colorless and transparent liquid.

Melting point °C, boiling point °C, pure hydrogen peroxide will change its teasing molecular configuration, so the melting and boiling point will also change. Freezing point.

, the density of the solid decreases with increasing temperature. Its degree of association is greater than that of H2O, so its dielectric constant.

and the boiling mountain limb point is higher than water.

The above content reference: Encyclopedia - Hydrogen Peroxide.

Polarity: The spatial structure of Co Hi NH3 is asymmetrical.

Non-polar: CO2 br2 spatial structure symmetry.

Co, Hi, NH3 polarity, other non-polarity.

The sum of the dipole distance vectors of each chemical bond is non-polar with 0 and non-polar with non-0.

C6H6 is not a polar molecule. Because the c atom in the benzene ring forms a large bond (containing 12 bonds) in the sp2 hybrid orbital. All C-C bonds are perfectly averaged, the benzene rings are highly symmetrical, and the positive and negative charge centers coincide.

The positive and negative charge centers in the molecule do not coincide, from the whole molecule, the distribution of the charge is uneven and asymmetrical, such a molecule is a polar molecule, a diatomic molecule bound by a polar bond must be a polar molecule, and a polyatomic molecule bound by a polar bond depends on the structure such as ch is a non-polar molecule.

C6H6 is not a polar molecule and is a non-polar molecule.

The C atom in the benzene ring forms a large bond (containing 12 bonds) with a sp2 hybrid orbitalAll c-c bonds are fully averaged.

The benzene ring is highly symmetrical, and the centers of positive and negative charges coincide.

If the molecular formula is benzene, it is a non-polar molecule, because the structure of benzene is still relatively symmetrical. However, optical C6H6 cannot be determined whether it is benzene or not, and it may be other isomers. Elite Education Golden Bridge Center.

The structural formula of hydrogen peroxide is as follows:

Through the structural formula, it can be seen that hydrogen peroxide is a polar molecule.

The most essential way to judge polar and non-polar molecules is:

1. The positive and negative charge centers in one molecule of a polar molecule do not coincide, while the positive and negative charge centers in a non-polar molecule do coincide;

2. Polar bonds exist between different elements;

3. Substances with polar bonds are not necessarily polar molecules.

Methods for distinguishing between polar and non-polar molecules:

Criterion of non-polar molecules: central atom valency method and force analysis method 1, central atom valency method:

If the valency of the central atom A is equal to the ordinal number of the group, the compound is a non-polar molecule, such as: CH4, CCL4, etc.;

2. Force analysis method:

If the bond angle (or spatial structure) is known, a force analysis can be performed. If the resultant force is 0, it is a non-polar molecule, such as: CO2, C2H4, BF3;

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

The structure of H2O2 is like an open book, O-O is in the gap between the books, and the 2 H's are on the two open books, and there is a certain angle between the two books.

The center of the negative charge is at the midpoint of the line of the 2 o's, in the gap between the books.

The center of positive charge is at the midpoint of the 2 h line, outside the slit.

The positive and negative charge centers do not coincide, so they are polar molecules.

Water is a polar molecule.

As the water molecule is a covalent bond at both ends are two different atoms (i.e., oxygen atom and hydrogen atom). Hence this covalent bond is polar, so the water molecule is polar.

The ionization of a water molecule can be understood as the breaking of a covalent bond in H-O-H (i.e., becoming H+ and OH-). Since the molecules are in constant motion, collisions are inevitable, and the water molecules gain energy in collision to break the covalent bonds.

The easiest way to determine the merger of polar and non-polar molecules

1. A-B molecules are all polar molecules.

2. A-A molecules are all non-polar molecules.

3. ABN, HNB type molecule, only count the valency of a single atom (A or B), if the absolute value of its valency is equal to the number of electrons in the outermost shell of its atom, then the molecule must be a non-polar molecule, otherwise it must be a polar molecule.

For example, the valency of monoatomic nitrogen in NH3 molecule is 3, its absolute value is 3, and the outermost electron number of nitrogen atom is 53 is not equal to 5, so it is a polar molecule Another example is the C2 molecule in which the valency of the single primordial hole carbon is 4 valence, and its absolute value is 4, and the outermost electron number of the carbon atom is 4, so it is a non-polar molecule.