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Semmy [17]
4 years ago
7

What is the oxidation number of nitrogen in the nitrate ion NO31−?

Chemistry
2 answers:
ahrayia [7]4 years ago
8 0

In No3-1 the oxidation number of oxygen is -5 so oxidation number of N would be +5

Alex_Xolod [135]4 years ago
4 0

Oxidation state on \text{N} as in the nitrate ion {\text{NO}_3}^{-}: +5.

<h3>Explanation</h3>

The sum of oxidation states on all atoms in an ion should be the same as the charge of the ion.

The oxidation state of nitrogen N tends to vary. However, the oxidation state of oxygen O is -2 in most cases, with the following exceptions:

  • Oxidation state of O in \text{O}_2: 0.
  • Oxidation state of O in \text{H}_2\text{O}_2 and other peroxides: -1.
  • The oxidation state of O will be positive when it is bonded to fluorine F.

To find the oxidation state on N, consider the atoms in a nitrate ion:

  • There are three O atoms in each nitrate ion, as seen in the subscript "3".
  • There's only one N atom in each nitrate ion.

The oxidation state of each O atom is expected to be -2. There are three O atoms in each nitrate ion. The oxidation state of the three atoms will add up to 3 \times (-2) = -6.

The oxidation state of the N atom needs to be found. Charge on the nitrate ion is -1. Thus

\begin{array}{ccc}\text{oxidation state on all atoms in the ion}&= &\text{charge of the ion}\\(\text{oxidation state on N}) + 3 \times (-2) &=& -1\end{array}

(\text{oxidation state on N}) = -1 - 3\times(-2) = -1 - (-6) = -1 + 6 = +5.

Therefore, the oxidation state of the nitrogen N atom in the nitrate ion {\text{NO}_3}^{-} is +5.

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The chemical equation representing the first ionization energy for lithium is given by;

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<h2>Further Explanation; </h2><h3>Ionization energy</h3>
  • Ionization energy is the energy required to remove outermost electrons from the outermost energy level. Energy is required to remove an electron from an atom.
  • The closer an electron is to the nucleus the more energy is required, since the electron is more tightly bound to the atom thus making it more difficult to remove, hence higher ionization energy.
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<h3>First ionization energy  </h3>
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  • Energy needed to remove the second electron to form a divalent cation is called the second ionization energy.
<h3>Trends in ionization energy  </h3><h3>1. Down the group(top to bottom)</h3>
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<h3>2. Across the period  (left to right)</h3>
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Keywords: Ionization energy, periodic table, energy levels, electrons

<h3>Learn more about</h3>
  • Ionization energy: brainly.com/question/1971327
  • Trend in ionization energy: brainly.com/question/1971327
  • First ionization energy: brainly.com/question/1971327

Level: High school  

Subject: Chemistry  

Topic: Periodic table and chemical families  

Sub-topic: Ionization energy

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