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Electronic Structure of the Atom: MCQ2

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Questions and Answers

What is the main limitation of the Bohr theory?

It did not account for the properties of electrons as waves (correct)
It did not explain the existence of energy sublevels
It only worked well for atoms with multiple electrons
It did not allow for the principle of electron spin

What is the Heisenberg uncertainty principle related to?

The probability of finding an electron in an atomic orbital
The energy levels of an atom
The number of atomic orbitals in an energy sublevel
The position and velocity of an electron (correct)

What is an atomic orbital?

A region of definite energy within an atom
A region around the nucleus where the probability of finding an electron is relatively high (correct)
A energy level that electrons can occupy
A group of atomic orbitals with the same energy

What is the Aufbau principle related to?

The filling of atomic orbitals with electrons (B) Signup and view all the answers

What is an energy sublevel?

A group of atomic orbitals with the same energy (C) Signup and view all the answers

What is a consequence of the Heisenberg uncertainty principle?

It is impossible to determine both the position and velocity of an electron (B) Signup and view all the answers

What is the main characteristic of an energy level?

It is a region of definite energy within an atom (A) Signup and view all the answers

What is the purpose of an atomic absorption spectrometer?

To identify the presence and amount of an element in a sample (D) Signup and view all the answers

What is the difference between a continuous spectrum and an emission spectrum?

A continuous spectrum shows a full range of colours, while an emission spectrum shows distinct lines of certain colours (D) Signup and view all the answers

What is the role of energy levels in an atom, according to Niels Bohr's theory?

Energy levels are the regions of definite energy within an atom where electrons can occupy, but only at specific energy values (D) Signup and view all the answers

What is the formula used to calculate the energy difference between two energy levels, according to Niels Bohr's theory?

E2 - E1 = hf (C) Signup and view all the answers

What is the purpose of a spectroscope?

To show the characteristic line spectrum of an element (C) Signup and view all the answers

What is the difference between the Paschen series and the Lyman series?

The Paschen series is in the IR region, while the Lyman series is in the visible region (D) Signup and view all the answers

What is the result of an electron moving from a higher energy level to a lower energy level, according to Niels Bohr's theory?

The electron emits a definite amount of energy in the form of light (C) Signup and view all the answers

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