What atoms are indicated by the following configuration ? Are they in the ground state or excited state?
`[Ar]3d^5, 4s^2`

Which atoms ar indicated by the configuration [He ] 2 s ^(1)

The configuration of Fe^(3+) ion in the ground state

Which atoms ar indicated by the configuration [Ar]4s ^(2) 3d ^(1)

Which atoms ar indicated by the configuration [Ne ]3s ^(2) 3p ^(3)

Explain the meaning of ground state and excited state of an atom?

What may be the stable oxidation state of the transition element with the following d-electron configuration in the group state of their atoms ? 3d^3, 3d^5, 3d^8, 3d^4

A set of atoms in an excited state decays

Estimate the ratio of the wavelength associated with the electron orbiting around the nucleus in the ground and first excited state of hydrogen atom.