Cr -> Cr+3 + 3e-
When Cr3+ forms, the neutral atom (chromium) loses 3 electrons. This happens because the neutral chromium atom has 24 electrons, but when it forms Cr3+, it loses 3 electrons to have a total of 21 electrons.
24 electrons, remember the atomic number of an element tells you how many protons it has. The number of protons = the number of electrons (if the atom isnt charged)
There are eight electrons in the third level of a chromium atom.There are four level in the chromium atom, and the fourth level, unfilled, contains 6 out of 18 electrons, in the neutral, non-ionized atom.
Na -> Na+ + e-
The electron configuration of a chromium atom is 1s2 2s2 2p6 3s2 3p6 4s1 3d5.
When Cr3+ forms, the neutral atom (chromium) loses 3 electrons. This happens because the neutral chromium atom has 24 electrons, but when it forms Cr3+, it loses 3 electrons to have a total of 21 electrons.
A chromium ion is not neutral. By definition an ion is not neutral. All atoms belong to an isotope, but that has nothing to do with whether the atom is ionized or not.
24 electrons, remember the atomic number of an element tells you how many protons it has. The number of protons = the number of electrons (if the atom isnt charged)
24, considering that an electron has a negative charge and the number of protons (positivley charged) is 24, an atom has to be neutrally charged
24 protons and 24 electrons
There are eight electrons in the third level of a chromium atom.There are four level in the chromium atom, and the fourth level, unfilled, contains 6 out of 18 electrons, in the neutral, non-ionized atom.
24, in the neutral atom. I think you mean chromium-53. It doesn't matter - the atomic number (the number of protons in the nuceus determines how many electrons there are in the neutral atom - the mass number ( the total protons and neutrons does not affect the number of electrons)
A chromic ion, Cr3+, has a charge of +3 due to the loss of three electrons from a neutral chromium atom.
There are 24 protons in Chromium (including Chromium54) of any isotope. Isotopes are just elements with different numbers of neutrons. If it is called chromium it has 24 protons. The atomic number of an element is the same as the number of protons.
Na -> Na+ + e-
This is obviously the Nobel gas argon.
neutral atom