3. Thats what the DAT says. But I think its 2. 3p2
In a Co2+ ion, cobalt has two fewer electrons than its neutral state, so it loses two electrons. Cobalt in its neutral state has 7 unpaired electrons. Upon losing two electrons, the Co2+ ion has 5 unpaired electrons.
The chromium (Cr) ion is expected to have 3 unpaired electrons. This is because the electron configuration of chromium is [Ar] 3d^5 4s^1, so when it forms an ion by losing its 4s electron, it retains the 5 unpaired electrons in the 3d subshell.
When selenium gains two electrons, it becomes the selenide ion.
Selenium may lose 2, 4 or 6 electrons and may gain 2 electrons.
The 3+ ion typically refers to a cation that has lost three electrons. The number of unpaired electrons in such an ion depends on the element in question. For instance, in the case of iron (Fe), which has the electron configuration [Ar] 3d^6 4s^2, the Fe^3+ ion would have lost two 4s electrons and one 3d electron, resulting in a 3d^5 configuration that has five unpaired electrons. However, for other elements, the number of unpaired electrons can vary.
The Fe2 ion has 4 unpaired electrons.
Selenium typically has 34 electrons in its neutral state. To determine the number of electrons in a selenium ion, you need to know the specific charge of the ion. For example, a selenium ion with a charge of +2 would have 32 electrons, while a selenium ion with a charge of -2 would have 36 electrons.
An oxide ion (O^2-) has 0 unpaired electrons. It has a full outer electron shell with 8 electrons, fulfilling the octet rule.
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5 unpaired electrons There are 5 unpaired electrons in the Fe3+ ion. The reason for this is that Iron has the electron configuration Ar3d5.
In a Co2+ ion, cobalt has two fewer electrons than its neutral state, so it loses two electrons. Cobalt in its neutral state has 7 unpaired electrons. Upon losing two electrons, the Co2+ ion has 5 unpaired electrons.
Magnesium has five unpaired electrons and is therefor paramagnetic
There are 5 unpaired electrons in Fe^3+ in its ground state.
All of the electrons are paired. If you are asking how many lone pairs, there are 4.
Selenium can gain 1 electron or loss 2, 4, 6 electrons.
The number of unpaired electrons in Tl-81 ion is zero, this in case of ejection of one electron from Tl-81 atom. Thx!!
There are 4 unpaired electrons in the ground state electron configuration of an Fe atom. These 4 unpaired electrons are in the 3d subshell.