The 5 in 3d5 refers to the number of sides on the dice that is being rolled. In this case, it means rolling a 5-sided dice three times. The outcome will be a number between 3 and 15.
[Ar] 3d5 4s1
The corresponding atom is chromium and its electron configuration is 1s2 2s2 2p6 3s2 3p6 4s1 3d5 or [Ar] 4s1 3d5 in shortened notation.
The shorthand electron configuration of manganese is [Ar]4s^2 3d^5. This notation indicates that manganese has 25 electrons, with the last two in the 4s orbital and the remaining five in the 3d orbital.
[Ar] 4s2 3d5
The noble gas configuration for manganese (Mn) is [Ar] 3d5 4s2. This means that it has the same electron configuration as argon (Ar) with 18 electrons, followed by 3d5 and 4s2 orbitals filled with electrons.
No, this electron configuration is not valid. The electron configuration should follow the Aufbau principle and Hund's rule. For the element with 3d5, it should be 1s2 2s2 2p6 3s2 3p6 4s1 3d5.
[Ar] 4s2 3d5
[Ar] 4s2 3d5
[Ar] 4s2 3d5
they represent the 5 continents of the world.
The 5 sides of the Pentagon represent the 5 branches.
1s2 2s2 2p6 3s2 3p6 4s2 3d5
The electronic configuration of Fe3+ is [Ar] 3d3 4s2 or 2, 8, 11, 2
They 5 rings represent the 5 continents of the world brought together.
Chromium
The electron configuration of a chromium II ion (Cr^2+) is [Ar] 3d^5. Chromium normally has an electron configuration of [Ar] 3d^5 4s^1, but when it loses two electrons to form the Cr^2+ ion, the 4s^1 electron is lost first, resulting in a 3d^5 configuration.
Chromium (24Cr) electron configuration: [Ar] 3d5 4s1 Complete [1s2, 2s2 2p6, 3s2 3p6] 3d5, 4s1