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creativ13 [48]
3 years ago
5

1. Describe the 3 rules that govern the building of an electron configuration. Provide an example that

Chemistry
1 answer:
vaieri [72.5K]3 years ago
8 0

Aufbau Principle

Pauli exclusion principle

Hund's rule of maximum multiplicity

Explanation:

Aufbau's principle states that sublevels with lower energies are filled up before those with higher energies.

For example the order of filling of the orbitals are :

     1s 2s 2p 3s 3p 4s 3d 4p

Pauli exclusion principle states that no two electrons in an atom can have the same set of the four quantum numbers. This implies that no two electrons can spin the same way.

Hund's rule of maximum multiplicity states that electrons go into degenerate orbitals of sub-levels singly before pairing commences:

 

  For example in Lithium 1s² 2s¹ all the rules are obeyed.

learn more:

electronic configuration brainly.com/question/4792889

#learnwithBrainly

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A student conducts an experiment to determine the effect of adding salt on the boiling temperature of water. The results are sho
sineoko [7]

Answer:

The answer to your question is: The first option is correct.

Explanation:

From the data given, we conclude that as the amount of salt increases, the boiling point of water increases.

Options

If salt is added to water, the water will boil at a higher temperature This is the hypothesis for the experiment.

Salt makes water boil. This statement is not true.

If water is boiling, it must have salt added to it. This statement is incorrect, it is not the goal of the experiment.

If salt is added to water, the water will get cloudy There is not evidence of that from the information given.

3 0
3 years ago
Read 2 more answers
What is the molarity of 2.3 mol of Kl dissolved in 0.5 L of water
Nastasia [14]

Answer:

4.6\,\,moL\,\,L^{-1}

Explanation:

Molarity refers to a measure of concentration.

Molarity = moles of solute/Litres of solution

Molarity refers to number of moles of solute present in this solution.

In order to find a solution's molarity, use value for the number of moles of solute  and the total volume of the solution expressed in liters

As molarity of 2.3 mol of Kl is dissolved in 0.5 L of water,

Molarity = \frac{2.3}{0.5} =4.6\,\,moL\,\,L^{-1}

4 0
3 years ago
Which of the following elements has the strongest ionization energy: Mg or Cl? Define ionization
Mila [183]

Answer:

Cl

Explanation:

The element Cl will have the strongest ionization energy from the given choices. Most non-metals have higher ionization energy compared to metals.

Ionization energy is the energy required to remove the most loosely held electron from the gaseous phase of an atom.

  • As you go from left to right on the periodic table, it increases progressive
  • From top to bottom, the ionization energy reduces significantly.
  • The attractive force between the protons in the nucleus and the electrons plays a very important role.
  • In metals, they have very large atomic radius, the attractive force on the outer electrons is very weak.
  • This is not the case in non-metals
5 0
3 years ago
How many atoms of magnesium metal are needed to produce 3.87 moles of magnesium oxide
Ket [755]

Answer:

48.42g of Mg

Explanation:

4 0
3 years ago
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How many orbitals are contained in the third main energy level and in the fifth energy level
antoniya [11.8K]

There are 9 orbitals in the third energy level and 25 orbitals in the fifth energy level.

I hope this helps you.

5 0
3 years ago
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