Table of Contents
- 1 Why is the electron configuration of potassium different?
- 2 Why is the electron configuration of potassium 2881?
- 3 What is the electron configuration of potassium?
- 4 Why are there only 8 electrons in the third shell of potassium?
- 5 Which element has an atom with the electron configuration 2 8 1?
- 6 Why is the electronic configuration of potassium 2 8 8 9?
- 7 How many electrons can be filled by 2s and 2p orbitals?
Why is the electron configuration of potassium different?
Hi, According to octet rule, the outermost shell of an atom can accommodate maximum 8 electrons (except K shell which can accommodate maximum 2 electrons). Hence, the electronic configuration of potassium is 2,8,8,1 and not 2,8,9.
Why is the electron configuration of potassium 2881?
s can hold 2 electrons,p can hold 6 electrons,d can hold 10 electrons,f can hold 14 electrons, and so on. Now, K= 1s2 2s2 2p6 3s2 3p6 4s1. So, we see that 3d has more energy than 4s. Hence, it enters the 4th shell, for the configuration of 2,8,8,1.
Why does the last electron of potassium go to the 4th shell instead of occupying the third shell?
The last electron in potassium enters the 4s orbital rather than the 3d orbital because the the 4s orbital has a lower energy level than the 3d orbi…
Which element has the electron configuration 2 8 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.
What is the electron configuration of potassium?
[Ar] 4s¹
Potassium/Electron configuration
Why are there only 8 electrons in the third shell of potassium?
The 4s sublevel (which only has one orbital) has a lower energy than the 3d sublevel (consisting of 5 orbitals) so electrons ‘fill’ this lower energy 4s orbital first. And since the 4s sublevel is part of the 4th energy level (n=4) you write the configuration of K as 2,8,8,1.
How many electrons are there in 3rd shell of potassium?
The actual energy values are approximate for any atom more complex than H, but all that matters here is the order. The 3rd shell of any atom can actually contain 18 electrons, but potassium (K) normally has only one electron in the 4s orbital.
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.
Which element has an atom with the electron configuration 2 8 1?
Element potassium (k) would be chemically similar to the element with electronic configuration 2,8,1 as both of these elements belong to group 1 of the periodic table as both have 1 valence electron.
Why is the electronic configuration of potassium 2 8 8 9?
According to octet rule, the outermost shell of an atom can accommodate maximum 8 electrons (except K shell which can accommodate maximum 2 electrons). Hence, the electronic configuration of potassium is 2,8,8,1 and not 2,8,9.
How many electrons are in the third energy level of potassium?
The third energy level is completely filled with 18 electrons (add up the bold superscripts). Since the nth energy level can only have n sublevels, the 3rd energy level has 3 sublevels. Re: Why does potassium have the electron configuration that it does?
What is the correct electron configuration for K?
The ‘proper’ electron configuration of K is 1s 2 2s 2 2p 6 3s 2 3p 6 4s 1. The superscripts show the number of electrons.
How many electrons can be filled by 2s and 2p orbitals?
Thus, for the 1s orbital, 2 electrons can fill the set of subshells. For n = 2 and l = 0,1, we have ml = {0} and ml = {0, ± 1}, and ms = ± 1 2. Thus, for the 2s and 2p orbitals combined, 2 + 6 = 8 electrons can fill the set of subshells.