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Electronic Structure of the Atom: MCQ3

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Questions and Answers

What is the purpose of a spectroscope?

To supply electricity to an atom

To identify a particular gas (correct)

To measure the energy levels of an atom

To produce a continuous spectrum

What type of spectrum is produced when an excited electron falls back to a lower energy level?

Continuous spectrum

Emission spectrum (correct)

Line spectrum

Absorption spectrum

What is the difference between energy levels E2 and E1, according to Niels Bohr's theory?

E2 × E1 = hf

E2 / E1 = hf

E2 + E1 = hf

E2 - E1 = hf (correct)

What is the purpose of an Atomic Absorption Spectrometer?

To measure the presence and amount of an element Signup and view all the answers

What is the name of the series when an excited electron falls back to n=2?

Balmer series Signup and view all the answers

What is the effect of supplying heat to an atom?

The energy levels of the atom increase Signup and view all the answers

What is the symbol for Planck's constant in the equation E2 - E1 = hf?

h Signup and view all the answers

What colour flame does lithium produce in a flame test?

Deep red Signup and view all the answers

What is the main limitation of the Bohr theory?

All of the above Signup and view all the answers

What is the region around the nucleus where the probability of finding an electron is relatively high?

Atomic orbital Signup and view all the answers

What is the principle that states electrons will occupy the lowest sublevel available?

Aufbau principle Signup and view all the answers

What is the term for the region of definite energy within an atom that electrons can occupy?

Energy level Signup and view all the answers

What is the principle that states it is not possible to determine the exact position and velocity of an electron at the same time?

Heisenberg uncertainty principle Signup and view all the answers

What is the group of atomic orbitals all of the same energy?

Energy sublevel Signup and view all the answers

What is the main limitation of the Bohr theory in terms of electron properties?

Not accounting for the wave-particle duality of electrons Signup and view all the answers