It possesses greater energy than the ground state.
Cobalt electron configuration is [Ar]3d7.4s2.Cobalt(2+) electron configuration is [Ar]3d7.
1s^2 2s^2 2p^6
1s22s2, [He]2s2, 2-2
This is a chemical element. You can find the how many electron in a single atom by using a periodic table.
water
It depends on the atom. For example, the electron configuration of an atom of boron in the ground state is 2-3. In the excited state, it would be 2-2-1. For an atom of chlorine, the ground state configuration is 2-8-7. The excited state would be 2-8-6-1. When an atom enters the excited state, an electron moves up to a higher energy level and releases energy. An electron in the excited state is not stable until it returns to ground state.
2-2-1
2
The oxidation state of boron is either three electrons or one electron. Boron has an valence electron configuration of ns2np1.
1s 2 2s 2 2p 1
[Xe]6s^2
There are 2 syllables. State-ment.
Outer most shell of Mn contain 2 electron in 4s orbital and 5 unpaired electron in 3d orbital hence in exiting state it has 7 unpaired electron. Thus It shown number of oxidation state................... 0, +2, +3, +4, +6, +7 etc.
This electron configuration represents Sr or Strontium. 2-8-18-7-3 represents Sr in the excited state; 2-8-18-8-2 represents Sr in the ground state.
Because they have only one electron in their valency shell. The second oxidation state would require the atom to lose an electron from its penultimate shell which is full.
The question asked doesn't make much sense. Because there is only one electron in one electron. The actual statement should be there can be a maximum of two electrons in one orbital.
1s^2 2s^2 2p^2 3s^2