Answer
See explanation below.
Work Step by Step
1
Part (A) :
The Bohr Model is based on systems having a single electron.
No of electrons in H atom = 1
No of electrons in Be(3+) atom = 1
Hence, Bohr model can accurately predict the spectra of these atoms.
2
Part (B) :
The energy of an atom in Bohr orbit is given by,
E = (-z²)(2.18 x 10^-18 J) / n²
For Hydrogen,
Z = 1
E for Hydrogen = (-(1²))(2.18 x 10^-18 J) / n² = -(2.18 x 10^-18 J) / n²
And, for Berillium,
Z = 4
E for Berillium, (-(4²))(2.18 x 10^-18 J) / n² = - 16 x (2.18 x 10^-18 J) / n²
Thus, E for Be is 16 times that for H.
This means that the patterns will be similar, but will be at at different Wavelengths.
