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Dafna11 [192]
3 years ago
11

Whats the electron configuration for an atom that has 13 electrons

Chemistry
2 answers:
DaniilM [7]3 years ago
3 0
2 electrons on the first ring, 8 on the second, and 3 on the third ring
Andreas93 [3]3 years ago
3 0
In order to write the Aluminium electron configuration we first need to know the number of electrons for the Al atom (there are 13 electrons). When we write the configuration we'll put all 13 electrons in orbitals around the nucleus of the Aluminium atom.

In writing the electron configuration for Aluminium the first two electrons will go in the 1s orbital. Since 1s can only hold two electrons the next 2 electrons for aluminium go in the 2s orbital. The nex six electrons will go in the 2p orbital. The p orbital can hold up to six electrons. We'll put six in the 2p orbital and then put the next two electrons in the 3s. Since the 3s if now full we'll move to the 3p where we'll place the remaining electron. Therefore the Aluminium electron configuration will be 1s22s22p63s23p1.
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Could you please help me with this
Reptile [31]

Answer:

Chemical equation:

Sr + S → SrS

Explanation:

Mg react with sulfur and form magnesium sulfate.

Chemical equation:

Mg + S  →  MgS

The oxidation state of magnesium is +2  it loses its two valance electrons while sulfur gain two electrons to complete the octet. That's why one atom of magnesium combine with one atom sulfur.

Chemical equation:

Sr + S → SrS

The oxidation state of strontium is +2  it loses its two valance electrons while sulfur gain two electrons to complete the octet. That's why one atom of strontium combine with one atom sulfur.

8 0
4 years ago
If 3.0 moles of hydrogen react, how many grams of nitrogen will be used? Round your answer to the nearest whole number. N2 + 3H2
Iteru [2.4K]

Answer:

28g

Explanation:

Given parameters:

Number of moles of hydrogen  = 3moles

Unknown:

Mass of nitrogen used = ?

Solution:

 To solve this problem, let us establish the balanced reaction equation first;

             N₂  + 3H₂ →  2NH₃

From the balanced reaction equation;

                 3 mole of H₂ will combine with 1 mole of N₂

                 

Now,

   Mass of Nitrogen  = number of moles x molar mass

         Molar mass of N₂  = 2(14) = 28g/mol

   Mass of Nitrogen  = 1 mole x 28g/mole  = 28g

8 0
3 years ago
Positive ions from a base and negative ions from an acid form a_____ .
lara31 [8.8K]
They will form a Salt
5 0
3 years ago
Read 2 more answers
In a recent Grand Prix, the winner completed the race with an average speed of 299.8 km/h. What was his speed in miles per hour,
scoundrel [369]

Answer :

(a) The speed is, 186.287 mi/hr

(b) The speed is, 83.277 m/s

(c) The speed is, 273.22 feet/s

Explanation :

(a) We are given the speed is, 299.8km/hr

As we know that,

1km=\frac{1}{1.60934}mi

By using both the conversion, we get:

299.8km/hr

\Rightarrow \frac{299.8km}{1hr}\times \frac{1mi}{1.60934km}

\Rightarrow 186.287mi/hr

The speed is, 186.287 mi/hr

(b) We are given the speed is, 299.8km/hr

As we know that,

1km=1000m

and,

1hr=3600s

By using both the conversion, we get:

299.8km/hr

\Rightarrow \frac{299.8km}{1hr}\times \frac{1000m}{1km}\times \frac{1hr}{3600s}

\Rightarrow 83.277m/s

The speed is, 83.277 m/s

(c) We are given the speed is, 299.8km/hr

As we know that,

1km=3280.84feet

and,

1hr=3600s

By using both the conversion, we get:

299.8km/hr

\Rightarrow \frac{299.8km}{1hr}\times \frac{3280.84feet}{1km}\times \frac{1hr}{3600s}

\Rightarrow 273.22feet/s

The speed is, 273.22 feet/s

3 0
4 years ago
A methane molecule, CH4, in the stratosphere or (2) a CH3 molecule and a hydrogen atom formed from breaking one of the carbon‐hy
MA_775_DIABLO [31]

The methane molecule in the stratosphere has a higher potential energy than the CH₃ molecule and the hydrogen atom formed from breaking one of the carbon‐hydrogen bonds in a CH₄ molecule.

The complete question is:

<em>For each of the following situations, you are asked which of two objects or substances has the higher energy. Explain your answer with reference to the capacity of each to do work and say whether the energy that distinguishes them is kinetic energy or potential energy.</em>

<em>a. (1) A methane molecule, CH4, in the stratosphere or (2) a CH3 molecule and a hydrogen atom formed from breaking one of the carbon-hydrogen bonds in a CH4 molecule.</em>

<h3>Which have a higher energy?</h3>

The methane molecule in the stratosphere is a stable molecule and possesses chemical potential energy.

The CH₃ molecule and the hydrogen atom formed from breaking one of the carbon‐hydrogen bonds in a CH₄ molecule are unstable molecules and possesses kinetic energy. However, some of their energy has been used in breaking the bond.

Thus, the methane molecule in the stratosphere has a higher potential energy than the CH₃ molecule and the hydrogen atom formed from breaking one of the carbon‐hydrogen bonds in a CH₄ molecule.

In conclusion, the energy in the methane molecule is higher.

Learn more about potential energy at: brainly.com/question/14427111

#SPJ1

5 0
2 years ago
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