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Bohr's Model of the Hydrogen Atom

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Questions and Answers

What is the radius of the orbit for an electron in He+ with n=1 and Z=2?

0.1058 nm

0.0529 nm

0.02645 nm (correct)

0.01763 nm

Which of the following is a limitation of Bohr's model of the hydrogen atom?

It fails to account for the stability of the hydrogen atom

It fails to account for the formation of molecules by chemical bonds

It fails to account for the line spectra of hydrogen atom

It fails to account for the spectrum of helium atoms (correct)

What was one of the shortcomings of Bohr's model mentioned in the text?

Inability to explain the splitting of spectral lines in the presence of magnetic field (correct)

Inability to form molecules by chemical bonds

Inability to account for the stability of the hydrogen atom

Inability to explain the line spectra of hydrogen atom

What is a limitation of the Bohr model?

It does not consider the wave character of the electron Signup and view all the answers

Why does the Bohr model fail to define the path of an electron?

Because it ignores the Heisenberg uncertainty principle Signup and view all the answers

What aspect of the Bohr model contradicts the Heisenberg uncertainty principle?

Exact definition of electron's position and velocity Signup and view all the answers

What did Niels Bohr use to explain the general features of the structure of the hydrogen atom and its spectrum?

Planck's concept of quantisation of energy Signup and view all the answers

What is the expression commonly known as Bohr's frequency rule?

$\Delta E = h\nu$ Signup and view all the answers

What quantity is quantized in Bohr's model of the hydrogen atom?

Angular momentum Signup and view all the answers

What provides the key to understanding the electronic structure of elements according to the text?

Regularities in the line spectra of each element Signup and view all the answers