alleryThe energy of the $n$th Bohr orbit of a hydrogen-like atom is
A$E_n = -13.6\,n^2/Z^2\,eV$
B$E_n = -13.6\,Z^2/n^2\,eV$
C$E_n = -13.6\,Z/n\,eV$
D$E_n = +13.6\,Z/n\,eV$
Answer & Solution
Correct answer: B. $E_n = -13.6\,Z^2/n^2\,eV$
$E_n = -13.6 \times Z^2/n^2\,eV$.
Negative because the electron is *bound*
$n=1, Z=1$ gives the ground-state H energy of $-13.6\,eV$.
Keep practising Structure of Atom
Browse all Structure of Atom questions for AP Intermediate 1st Year, or explore more Chemistry topics.
Related questions
NEET · Chemistry · Quantum NumbersIn the photoelectric effect, the kinetic energy of ejected electrons is:The electronic configuration of Cr (Z=24) is an exception, written as:By the AUFBAU principle, the 3d subshell starts filling:Hund's rule states that electrons in degenerate orbitals:Heisenberg's uncertainty principle is most accurately stated as:The de Broglie wavelength of a particle with momentum p is:The energy of the nth orbit in a hydrogen atom (Bohr's model) is: