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Naily [24]
3 years ago
6

How do I figure out polarity? thanks!​

Chemistry
2 answers:
OlgaM077 [116]3 years ago
7 0

Answer:

With some chemical knowledge, you can fairly easily guess if a molecule will be polar or not. Each atom will have a different level of electronegativity, or ability to attract electrons. Actually calculating the polarity of a molecule precisely, however, requires determining the shape of the molecule and performing vector addition. The length of each vector will correspond to the electronegativity of the atom in each bond. The direction of the vector will correspond to molecular shape.

   Draw the molecule in standard chemical format, with all atoms and free electrons shown in the drawing.

   Determine the shape of the molecule. With one or two bonded atoms, the molecule will be linear. With two bonded atoms and unbonded electrons, the molecule will be angular. With three bonded atoms and no free electrons, the molecule will be flat triangular. With three bonded atoms and a set of free electrons, the molecule will be triangular, pyramidal. With four bonded atoms, the molecule will be pyramidal.

Related

How to Know If a Compound Is Polar or Non-Polar?

Updated April 24, 2017

By David Ward

With some chemical knowledge, you can fairly easily guess if a molecule will be polar or not. Each atom will have a different level of electronegativity, or ability to attract electrons. Actually calculating the polarity of a molecule precisely, however, requires determining the shape of the molecule and performing vector addition. The length of each vector will correspond to the electronegativity of the atom in each bond. The direction of the vector will correspond to molecular shape.

   Draw the molecule in standard chemical format, with all atoms and free electrons shown in the drawing.

   Determine the shape of the molecule. With one or two bonded atoms, the molecule will be linear. With two bonded atoms and unbonded electrons, the molecule will be angular. With three bonded atoms and no free electrons, the molecule will be flat triangular. With three bonded atoms and a set of free electrons, the molecule will be triangular, pyramidal. With four bonded atoms, the molecule will be pyramidal.

   

Determine the electronegativity of each atom in the molecule. Use a standard measurement, such as a centimeter per whole unit of electronegativity, to determine the length of each vector.

Draw a vector of the appropriate length for each atom that you determined vector length. Draw them facing the direction they would face in the molecule, according to the shape determined in Step 2.

Line up the vectors end to end. The distance between your starting point and the final vector is the measurement of polarity in the molecule. For example, if you used 1 cm per whole unit of electronegativity, and your final distance between the last vector and your starting point is 5 mm, the molecule has a polarity of 0.5 in that direction.

Explanation:

Blizzard [7]3 years ago
5 0

Si and F is the answer.

Brainliest?

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Answer:

Polar covalent bond.

Explanation:

When the bond is formed between the atoms by sharing the electrons the bond thus have covalent character.   The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.  When the electronegativity difference is less than 0.4 the bond is non polar covalent.

When bonded atoms have greater electronegativity difference i.e 2 or greater than two the bond is ionic because electron is transfer from low electronegative atom to highest electronegative atom.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive.

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3 years ago
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How does an exothermic change show that a chemical reaction occured?
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8 0
3 years ago
How to balance the question?​
umka21 [38]

Answer:

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I hope I helped you^_^

4 0
3 years ago
Predict the number of peaks that you would expect in the proton-decoupled 13C spectrum of each comound.
dangina [55]

Answer:

To interpret a 13C-NMR spectrum we will use some standards very simple. A  13C-NMR spectrum gives us the following information:

1. Indicates the number of non-equivalent carbons in the molecule.

2. Measuring the chemical shift we can intuit the environment

electronic and determine the next functional groups.

3. In this case we cannot count on integration since the different

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The number of peaks in the spectrum indicates the number of types of carbon present in the analyzed substance.

The factors that influence the chemical shift of the signals in the 13C NMR are:

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Explanation:

The nuclear magnetic resonance of C13 is complementary to that of H1. This technique is used to determine the magnetic environment of carbon atoms.

4 0
3 years ago
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