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The color of chromate (yellow) and dichromate (orange) comes from the chromium. In particular from the arrangement of electrons in the 3d-sublevel.
You were probably taught that the d-orbitals are all at the same energy, and that's true if there were not other atoms attached to chromium. Since chromium is in a polyatomic ion which has water molecules attached to it, there is some splitting of the energy levels of the chromium's d-orbitals and it is the difference in these two energy levels that absorbs certain wavelengths of light and not others.
The light that is not absorbed is orange, which is what you see when you look at solutions of the dichromate ion.
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Where are the protons in a potassium atom?
Protons in potassium are located in the necules
If a bromine atom were to attract an extra electrons from potassium the potassium atom would become charged?
The potassium atom would become positively charged - or a cation.
How many electrons does an atom potassium havew?
Finding the number of electrons in an atom is easy. You just have to know the atomic number of the element. The atomic number for Potassium is 19. That means Potassium has 19 electrons.
How many elements in potassium chloride?
There are two elements in potassium chloride. One atom of potassium and one atom of chlorine react to form potassium chloride.
Is potassium nitrate just potassium plus nitrate?
Technically, yes. Potassium nitrate is a potassium atom attached to the nitrate ion.
Why potassium dichromate is orange red in color?
The orange color of potassium dichromate is caused by the movement of an electron to a vacant d-orbital in the manganese atom. The transition occurs when the chemical is in the presence of light. This is confirmed by the empty 3d-orbital in chromium.
What is the oxidation number of one chromium atom in potassium dichromate?
Potassium dichroamte is K2Cr2O7, in the dichroamte ion both Cr atoms have an oxidation number of +6.
What makes up potassium phosphide?
K3P, three atoms of Potassium and one atom of phosphorous.
What is e major atom in potassium?
Potassium is an element, so the only atom in potassium is potassium.
Where are the protons in a potassium atom?
Protons in potassium are located in the necules
When a potassium atom reacts with a bromine atom the potassium atom will?
lose only one electron
How is a potassium atom (K) different from a potassium ion (K )?
Potassium consists of potassium atoms with their valence electrons delocalized throughout the metal, put those electrons still essentially "belong" to their atoms. A potassium ion is a potassium atom that has lost its valence electron to another atom molecule or ion and therefore carries a 1+ charge.
What ionic charge does a regular atom of potassium have?
An ordinary atom of potassium has no charge.An ionized atom of potassium typically has a +1 charge.Different things.
What is the difference between potassium chloride and potassium nitrate?
The difference between potassium nitrate and potassium sulphate is that the potassium nitrate is superior to potassium sulphate. The potassium nitrate has high solubility while the potassium sulphate has moderate solubility.
A potassium atom has how many electrons?
The neutral atom of potassium has 19 electrons.
What element is in potassium oxide K2O?
2 atom potassium and 1 atom oxygen
What are the atoms in one molecule of potassium hydroxide?
The chemical formula of potassium hydroxide is KOH: 1 atom of potassium, 1 atom of oxygen, 1 atom of hydrogen.
