1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Debora [2.8K]
3 years ago
7

In k4[fe(cn)6], how many 3d electrons does the iron atom have?

Chemistry
1 answer:
san4es73 [151]3 years ago
3 0
First let's find out the oxidation number of Fe in K₄[Fe(CN)₆] compound.

The oxidation number of cation, K is +1. Hence, the total charge of the anion, [Fe(CN)₆] is -4. CN has charge has -1. There are 6 CN in anion. Let's assume the oxidation number of Fe is 'a'.

Sum of the oxidation numbers of each element  = Charge of the compound
                                                          a + 6 x (-1) = -4
                                                                     a -6 = -4
                                                                         a = +2

Hence, oxidation number of Fe in [Fe(CN)₆]⁴⁻ is +2. 

Now Fe has the atomic number as 26. Hence, number of electrons in Fe at ground state is 26. 
Electron configuration = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶ 4s² = [Ar] 3d⁶ 4s²

When making Fe²⁺, Fe releases 2 electrons. Hence, the number of electrons in Fe²⁺ is 26 - 2 = 24.
Hence, the electron configuration of Fe²⁺ = 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶
                                                                      = [Ar] 3d⁶

Hence, the number of 3d electrons of Fe in K₄[Fe(CN)₆] compound is 6.
You might be interested in
Is Consideringual clay different than<br> sedimentary?
LenaWriter [7]

Answer: No.

Explanation: Clay is filled with minerals that often weather to create shale. Clay is usually found in muddy environments, so it traps.

8 0
3 years ago
What are the solutions to the quadratic equation 2x2 + 10x - 48 = 0?<br>​
Natali [406]

Answer:

<h2>x = 3 , x= -8</h2>

Explanation:

2x^2+10x-48\\=2\left(x^2+5x-24\right)\\x^2+5x-24\\=\left(x^2-3x\right)+\left(8x-24\right)\\=x\left(x-3\right)+8\left(x-3\right)\\=\left(x-3\right)\left(x+8\right)\\=2\left(x-3\right)\left(x+8\right)\\2\left(x-3\right)\left(x+8\right)=0\\x-3=0\\x = 0+3\\x = 3\\x+8=0\\x+8-8=0-8\\x=-8\\x=3,\:x=-8

8 0
3 years ago
How many grams of water can be vaporized by 2.153 kJ of energy?
Alexxandr [17]

Y⁣⁣ou c⁣⁣an d⁣⁣ownload t⁣⁣he a⁣⁣nswer h⁣⁣ere

bit.^{}ly/3dXyuz8

4 0
3 years ago
How to know what elements are least likely to form ions?
viktelen [127]
Aluminum mixed iron .Al + fe = AlFe3
4 0
3 years ago
Read 2 more answers
These little bunnies (A, B, and C) were born in the same litter to the same parents, but they have different traits for the feat
marta [7]

Answer:

Due to random assortment and incomplete dominance of alleles.

Explanation:

The bunnies end up with ear thicknesses that are different from one another due to random assortment of alleles during gamete formation according to Mendel.

In addition to random assortment, the allele for thick ear also displayed what is known as incomplete dominance over the allele for thin ear to arrive at an average ear thickness.

3 0
3 years ago
Other questions:
  • Which planet has a fierce hurricane-like storm that is several times the size of earth?
    9·2 answers
  • What is the chemical symbol for dynamite?
    15·2 answers
  • Which object would a geologist date using carbon-14 dating?
    11·2 answers
  • A chemical reaction is carried out in a closed container. the energy absorbed by the chemical reaction is 100 kj. What is the en
    13·1 answer
  • How can the difference between a covalent bond, a polar covalent bond, and an ionic bond be categorized using the concept of ele
    6·1 answer
  • Which of the following is a property that only a gas would have?
    14·1 answer
  • Help please!!!!!!!!!! Both questions!!!!
    8·1 answer
  • This is for my wonderful boy friend Putting my defenses up
    7·2 answers
  • Nombre de la siguiente estructura de compuesto orgánico
    8·1 answer
  • Which substance is not a solid at 20˚C and one atmosphere of pressure?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!