The electronic configuration of chromium is 1s2 2s2 2p6 3s2 3p6 3d5 4s1.
The electron configuration for Chromium (Cr) is [Ar] 3d^5 4s^1. The electron configuration for Chromium II (Cr^2+) is [Ar] 3d^4.
The electron configuration of a Copper(II)ion is [Ar]4s0 3d9.
Cr^+2 is the symbol for the Chromium(II) ion
The compound configuration containing lead II ion is lead(II) nitrate, with the chemical formula Pb(NO3)2. Lead II ion has a +2 charge, which is why it is designated as "II" in its naming.
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The electron configuration for Chromium (Cr) is [Ar] 3d^5 4s^1. The electron configuration for Chromium II (Cr^2+) is [Ar] 3d^4.
The electron configuration of a Copper(II)ion is [Ar]4s0 3d9.
Cr^+2 is the symbol for the Chromium(II) ion
The electron configuration of copper(II) is [Ar] 3d9 . Copper is [Ar] 3d10 4s1
Many Transition Metals can have different numbers of valence electrons. The "II" means it has 2 valence electrons.Thanks & Regards,Shoaib Khan - SRKMob: +91-9534330837Email: shoaibrazakhan@gmail.com
The compound configuration containing lead II ion is lead(II) nitrate, with the chemical formula Pb(NO3)2. Lead II ion has a +2 charge, which is why it is designated as "II" in its naming.
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Silver typically forms a +1 ion, known as Ag+. This is because silver is a transition metal with a single electron in its outermost shell, which it tends to lose to achieve a stable electron configuration.
it is a chromium 2 as a good point of reference, and if you don't know the specific charge of an atom, check the ion to which it is bound: the phosphide ion is most commonly charged as a 3- ion because its period is has 3 electrons more than it needs to form a complete octet 2 phosphide ions (per your empirical formula) would have a total ionic charge of 6- if you distribute the (6-) charge evenly through the 3 chromium ions in your empirical formula, then each chromium ion would have to have a charge of 2+ in order for the ionic salt to be neutrally charged. therefore the chromium is chromium (II)
The electron configuration of zinc II is [Ar]3d10, where [Ar] represents the electron configuration of argon (1s2 2s2 2p6 3s2 3p6). This means that zinc II has lost two electrons from its neutral state (Zn) to become Zn2+.
The iron (II) ion, or Fe2+, has a +2 charge due to the loss of 2 electrons. Iron (III) ion, or Fe3+, has a +3 charge from losing 3 electrons. The main difference is the number of electrons each ion has lost, which affects their chemical properties and reactivity.
there is no element with the symbol R, so perhaps it is meant to read CrCl6 which is Chromium Chloride. Hope this helps! for more info on Chromium Chloride visit http://en.wikipedia.org/wiki/Chromium(III)_chloride