Assertion: hydrogen atom's electron | /r/AtLocation | the lowest bohr orbit
Facets:
value: to screen the nuclear charge
type: PURPOSE
Source sentences:
text: But the n=2 electrons see an effective charge of Z − 1, which is the value appropriate for the charge of the nucleus, when a single electron remains in the lowest Bohr orbit to screen the nuclear charge +Z, and lower it by −1 (due to the electron's negative charge screening the nuclear positive charge).