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3 years ago

How does the atomic radii trend explain the electronegativity trend?

1 answer:

3 0

Answer is: electronegativity decreases with increase of atomic radius, because of increased distance between the valence electrons and nucleus, so atoms tends to lose electrons easier.

Electronegativity<span> is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.</span>

The atomic radius of a chemical element is a measure of the size of its atom.The atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.The atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.

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Azobisisobutyronitrile (AIBN) is commonly used as a radical initiator. Use correct arrow formalism to show this process.

Dahasolnce [82]

Answer: AIBN is good radical initiator

Explanation:

A radical in organic chemistry refers to any specie having a single unshared electron. An initiator is any specie capable of producing radicals thus starting up a chain reaction. Azobisisobutyronitrile is a good initiator basically owing to its structure. It forms radicals by breaking up to release nitrogen gas as shown in the image attached. The two radicals formed both contain the -CN group which stabilizes the radical.

4 0

4 years ago

A pharmaceutical company wants to test the efficiency of its new drug production techniques so they run 3 shifts of production f

spayn [35]

The percentage yield of the new production technique is 82.8%

<h3>What is the percentage yield?</h3>

Production is the procedure by which finished products are obtained form the raw materials. The production process involves the passing of raw materials through a certain procedure that involves the use of certain machines and equipment to give us the required products.

We are told in the question that there are three shifts;

Shift 1 produces 4562 grams

Shift 2 produces 5783 grams

Shift 3 produces 5247 grams

Average production from the three shifts = 4562 grams + 5783 grams + 5247 grams/3 = 5197 grams

The theoretical average yield is = 7000 grams + 7000 grams + 7000 grams/3 = 7000 grams

Now the percentage yield = actual yield/ theoretical yield * 100/1

percentage yield = 5197 grams/7000 grams * 100/1

percentage yield = 82.8%

Learn more about percentage yield :brainly.com/question/27492865

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3 0

2 years ago

The discovery of a very early form of helium supports the big bang theory because _____.

Amiraneli [1.4K]

Answer:

The discovery of early helium supports the Big Bang Theory because helium is something that would have been a product of a large explosion. Helium is also the most proliferate element in the universe.

Explanation:

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6 0

3 years ago

Read 2 more answers

What is the acceleration of a car that starts at 0 km/s and speeds up to 50 km/s in 10 seconds?

julsineya [31]

Answer:

5km/s yes

Explanation:

3 0

3 years ago

What are its electron-pair and molecular geometries? What is the hybridization of the nitrogen atom? What orbitals on and overla

jok3333 [9.3K]

Answer:

Electron-pair geometry: tetrahedral

Molecular geometry: trigonal pyramidal

Hybridization: sp³

sp³ - 4 p

Explanation:

There is some info missing. I think this is the original question.

<em>For NBr₃, What are its electron-pair and molecular geometries? What is the hybridization of the nitrogen atom? What orbitals on N and Br overlap to form bonds between these elements?</em>

<em>The N-Br bonds are formed by the overlap of the ___ hybrid orbitals on nitrogen with ___ orbitals on Br.</em>

<em />

Nitrogen is a central atom surrounded by 4 electron domains. According to VESPR, the corresponding electron-pair geometry is tetrahedral.

Of these 4 electron domains, 3 represent covalent bonds with Br and 1 lone pair. According to VESPR, the corresponding molecular geometry is trigonal pyramidal.

In the nitrogen atom, 1 s orbital and 3 p orbitals hybridize to form 4 sp³ orbitals for each of the electron domains.

The N-Br bonds are formed by the overlap of the sp³ hybrid orbitals on nitrogen with 4p orbitals on Br.

7 0

3 years ago