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Why configuration of 'Cr' is 3d5 4s1 and not 3d4 4s2 and 'Cu' is 3d10 4s1 and not 3d9 4s2?
The electron configurations of chromium (Cr) and copper (Cu) are exceptions to the expected order due to the stability gained from half-filled and fully filled d subshells. For chromium, having a half-filled 3d subshell (3d^5) provides extra stability, so one electron from the 4s subshell is promoted to the 3d subshell, resulting in 3d^5 4s^1. Similarly, for copper, a fully filled 3d subshell (3d^10) is more stable than having one more electron in the 4s subshell (3d^9 4s^2), leading to the configuration of 3d^10 4s^1.
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What is the full electron configuration of copper plus 2 ion?
The electron configuration of copper(II) is [Ar] 3d9 . Copper is [Ar] 3d10 4s1
What is the outer electron configuration for copper?
The electron configuration of copper is 1s22s22p63s23p63d104s1.
What are three examples of elements with unpredictable electron configurations?
Chromium: Chromium typically forms a half-filled d5 configuration (4s1 3d5) instead of a fully-filled d4 configuration (4s2 3d4) due to the increased stability associated with the half-filled d orbital. Copper: Copper prefers to have a full d10 configuration (4s1 3d10) instead of a partially filled d9 configuration (4s2 3d9) as it increases stability. Silver: Silver can have an electron configuration of [Kr] 4d10 5s1 instead of the expected [Kr] 4d9 5s2 due to the stability associated with the fully-filled 4d orbital.
What is the noble gas notation for the copper ii ion?
The noble gas notation for the copper(II) ion (Cu2+) is [Ar]3d9. This notation represents the electronic configuration of copper when all inner shell electrons up to argon are included before the outer d orbital configuration of 3d9.
What two elements in the periodic table have configurations that are apparent contradictions to the diagonal rule?
Two elements that have configurations that are apparent contradictions to the diagonal rule are chromium and copper. These elements have electron configurations of [Ar] 3d5 4s1 and [Ar] 3d10 4s1, respectively, instead of the expected [Ar] 3d4 4s2 and [Ar] 3d9 4s2 configurations based on the Aufbau principle and diagonal rule. This is because having a half-filled d orbital (in the case of chromium) or a fully filled d orbital (in the case of copper) provides greater stability than the predicted configurations.
What are two elements with ground-state electron configurations that are well-known exceptions to the Aufbau principle?
Chromium and copper are well-known exceptions to the Aufbau principle. Chromium has an electron configuration of [Ar] 3d5 4s1 instead of the expected [Ar] 3d4 4s2, and copper has an electron configuration of [Ar] 3d10 4s1 instead of the expected [Ar] 3d9 4s2.
Abbreviated electron configuration for copper?
The abbrieviated electron configuration of copper is [Ar] 4s23d9
Why is the electron configuration for copper 3d10 4s1 - shouldn't it be 3d9 4s2?
Copper has a partially filled d orbital to achieve greater stability. Hence, it gives up one electron from the 4s orbital to make the 3d orbital completely filled with 10 electrons, which is a more stable configuration. This results in the electron configuration of 3d10 4s1 for copper rather than 3d9 4s2.
What is the full electron configuration of copper plus 2 ion?
The electron configuration of copper(II) is [Ar] 3d9 . Copper is [Ar] 3d10 4s1
What is the electron configuration notation for Cu?
The electronic configuration od Cu is [Ar] 3d10 4s1 This is an exception to the aufbau principle which would predict [Ar] 3d9 4s2.
What is the electron configuration of copper 1 ion?
The electron configuration of a Copper(II)ion is [Ar]4s0 3d9.
What is the outer electron configuration for copper?
The electron configuration of copper is 1s22s22p63s23p63d104s1.
What are three examples of elements with unpredictable electron configurations?
Chromium: Chromium typically forms a half-filled d5 configuration (4s1 3d5) instead of a fully-filled d4 configuration (4s2 3d4) due to the increased stability associated with the half-filled d orbital. Copper: Copper prefers to have a full d10 configuration (4s1 3d10) instead of a partially filled d9 configuration (4s2 3d9) as it increases stability. Silver: Silver can have an electron configuration of [Kr] 4d10 5s1 instead of the expected [Kr] 4d9 5s2 due to the stability associated with the fully-filled 4d orbital.
What element has Ar4s2 3d9?
The element with Ar4s2 3d9 electron configuration is cobalt (Co).
Has two electrons less than element c and ends its electron configuration in 3d9?
The element in question has an atomic number that is 2 less than element C and its electron configuration ends in 3d9. This would suggest that the element is one of the transition metals that comes before element C in the periodic table. A possible candidate fitting this description is manganese (Mn), which has an atomic number of 25 and an electron configuration of [Ar] 3d5 4s2.
What is the noble gas notation for the copper ii ion?
The noble gas notation for the copper(II) ion (Cu2+) is [Ar]3d9. This notation represents the electronic configuration of copper when all inner shell electrons up to argon are included before the outer d orbital configuration of 3d9.
What two elements in the periodic table have configurations that are apparent contradictions to the diagonal rule?
Two elements that have configurations that are apparent contradictions to the diagonal rule are chromium and copper. These elements have electron configurations of [Ar] 3d5 4s1 and [Ar] 3d10 4s1, respectively, instead of the expected [Ar] 3d4 4s2 and [Ar] 3d9 4s2 configurations based on the Aufbau principle and diagonal rule. This is because having a half-filled d orbital (in the case of chromium) or a fully filled d orbital (in the case of copper) provides greater stability than the predicted configurations.
