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Taya2010 [7]
3 years ago
11

Choose the element described by the following electron configuration.

Chemistry
2 answers:
Katyanochek1 [597]3 years ago
8 0

The correct answer is Argon.

earnstyle [38]3 years ago
3 0
The correct option is ARGON.
To quickly find out the element that is been described by the electronic configuration, write down and add together all the index figures in the electronic configuration. The index figures in the above electronic configuration are 2, 2, 6, 2 and 6. If you add all these figures together, you will get 18 and the element that has the atomic number of 18 is argon.
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Balance the following: <br><br> C₂ + B → B₂C₂<br><br> Ag₄ + SO₂ → AgO + S₂
jarptica [38.1K]

Answer:

The balanced reactions are:

C₂ + 2B → B₂C₂

Ag₄ + 2SO₂ → 4AgO + S₂

Explanation:

The Law of Conservation of Matter postulates that "the mass is not created or destroyed, only transformed." This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends. In other words, then the mass before the chemical reaction is equal to the mass after the reaction.

In other words, the law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts .

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

By multiplying the coefficient mentioned by the subscript, you get the amount of each element present in the reaction.  

You have:

<em>C₂ + B → B₂C₂</em>

Left side: 2 C and 1 B.

Right side: 2 C and 2 B.

Carbon C is balanced since you have the same amount of the element on each side of the reaction, but boron B is not balanced. So, balancing the reaction:

<u><em>C₂ + 2B → B₂C₂</em></u>

Left side: 2 C and 2 B.

Right side: 2 C and 2 B.

Now you have the same amount of each element on each side of the reaction, so the reaction is balanced.

Now you have:

<em>Ag₄ + SO₂ → AgO + S₂</em>

Left side: 4 Ag, 1 S and 2 O.

Right side: 1 Ag, 2 S and 1 O.

Balancing the Ag:

<em>Ag₄ + SO₂ → 4AgO + S₂</em>

Left side: 4 Ag, 1 S and 2 O.

Right side: 4 Ag, 2 S and 4 O.

Balancing the O:

<u><em>Ag₄ + 2SO₂ → 4AgO + S₂</em></u>

Left side: 4 Ag, 2 S and 4 O.

Right side: 4 Ag, 2 S and 4 O.

You have the same amount of each element on each side of the reaction, so the reaction is balanced.

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3 0
3 years ago
A particle that orbits the nucleus in an atom is called a(n
Morgarella [4.7K]
Particles that orbit the nucleus are called electrons.

Explanation: Electrons are negatively charged particles arranged in orbits  around the nucleus of an atom and determining all of the atom's physical and chemical properties  except mass and radioactivity.
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It is simple, just set up a router and electrical box
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Where do meteorologists obtain the data they use to make a <br> weather forecast?
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doppler radar, radiosondes, weather satellites, buoys

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