Table of Contents
Which element has the Bohr model configuration of 2/8 14 2?
1s22s22p63s23p64s23d6 or 2, 8, 14, 2 electrons per shell, so an atom of iron has two electrons in the outermost shell.
Where is an element found that has the electron configuration of 2/8/13 2?
Manganese is another of the many transition elements found in the center section of the periodic table. The electron configuration reveals that in the change from chromium to manganese, the electron was added to the outermost shell. The resulting configuration shows manganese to be 2-8-13-2.
Which element has the electronic configuration 2 and 8 and 2?
Magnesium is the element with the electronic configuration of 2,8,2 as its atomic number is 12, since the atomic number is the sum of all the electrons present in the electronic configuration.
Why does iron have 14 electrons in its 3rd shell?
Even though 4s belongs to 4th shell, still its energy is less than 3d which can be reasoned out by (n+l) rule. 4s energy is less than 3d, hence the two electrons which you expected to be going to 3d goes to 4s before 3d filling starts. Hence you end up having 14 electrons in 3rd shell and 2 electron in 4s.
What is electronic configuration for iron?
[Ar] 3d6 4s2
Iron/Electron configuration
What is the 2 8 8 electron rule?
Transition metals are able to put more than eight electrons in the shell that is one in from the outermost shell. Think about argon (Ar). It has 18 electrons set up in a 2-8-8 order. Scandium (Sc) is only 3 spots away with 21 electrons, but it has a configuration of 2-8-9-2.
What is the electronic configuration of iron?
What element has an electron configuration of 2 2?
| Element | Atomic number | Electron configuration |
|---|---|---|
| helium | 2 | 1s2 |
| lithium | 3 | 1s22s1 |
| beryllium | 4 | 1s22s2 |
| boron | 5 | 1s22s22p1 |
What are the period number and group number of an element having electronic configuration 2 8 8 2?
Electronic configuration of ‘X’ is 2, 8, 8, 2. (a) X belongs to period 4 because it has 4 energy shells. (b) Since X has 2 valence electrons, so it belongs to group no. 2.
Which column does this element belong 2 8 2?
For this element, the no. of valence electrons =2, valency =2 and as it is metal it belongs to the s-block. The element which belongs to the 3rd period and group 2 is Magnesium.
What is the sub shell electronic configuration of iron?
Therefore the Iron electron configuration will be 1s22s22p63s23p64s23d6. Note that when writing the electron configuration for an atom like Fe, the 3d is usually written before the 4s.