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Vedmedyk [2.9K]
3 years ago
14

An atom has 5 electrons in its outer shell. how many unpaired electrons does it have?

Chemistry
1 answer:
lions [1.4K]3 years ago
4 0

The answer is 3.

That is if an atom has 5 electrons in its outer shell, then it has 3 unpaired electrons.

As the outer shell have 1 s orbital too and that is fully filled and not available for bonding so it must have 3 unpaired electrons.

So the number of unpaired electrons in an atom that is having 5 electrons in its outer shell is 3.


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zalisa [80]

Answer:

0.124 mol Ag

General Formulas and Concepts:

<u>Atomic Structure</u>

  • Moles

<u>Stoichiometry</u>

  • Using Dimensional Analysis

Explanation:

<u>Step 1: Define</u>

[Given] 7.49 × 10²² atoms Ag

[Solve] mol Ag

<u>Step 2: Identify Conversions</u>

Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<u>Step 3: Convert</u>

  1. [DA] Set up:                                                                                                    \displaystyle 7.49 \cdot 10^{22} \ atoms \ Ag(\frac{1 \ mol \ Ag}{6.022 \cdot 10^{23} \ atoms \ Ag})
  2. [DA] Divide [Cancel out units]:                                                                       \displaystyle 0.124377 \ mol \ Ag

<u>Step 4: Check</u>

<em>Follow sig fig rules and round. We are given 3 sig figs.</em>

0.124377 mol Ag ≈ 0.124 mol Ag

Topic: AP Chemistry

8 0
3 years ago
What is the difference between ionic and covalent bonds? Give an example of a each type<br>​
Norma-Jean [14]

Answer:

Ionic bonds are opposite, whereas Covalent bonds are opposite.

Explanation:

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Examples:

Sodium Chloride and Sodium Fluoride are examples of <em>Ionic</em><em> </em><em>bonds</em><em>.</em>

<u>and</u>

Water and Carbon Dioxide are examples of <em>Covalent</em><em> </em><em>bonds</em><em>.</em><em> </em>

4 0
4 years ago
What is the frequency of electromagnetic radiation with a wavelength of 6.34 x 10^8 m?
Svetllana [295]
<h2>Answer: 4.72 × 10⁷  s⁻¹ or Hz</h2><h3>  Explanation: </h3>

frequency = speed of light ÷ wavelength

frequency = (2.99 × 10⁸  m/s)  ÷  (6.34 × 10⁸  m)

                  =  4.72 × 10⁷  s⁻¹ or Hz

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3 years ago
Isotopes:
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A. Of a given element have different numbers of neutrons
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Identify the oxidizing agent and the reducing agent for 4Li(s) + O_2 (g) to 2Li_2O(s).
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<span>4Li(s) + O2 (g) = 2Li+  + 2O-2(s).

The oxidizing agent is the one that is being reduced which is oxygen  where the charge changed from neutral to -2 while the reducing agent is the on being oxidized which is lithium where the charge change from neutral to +1.</span>
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