#1
Which phenomenon is responsible for the emission of photons when an electron transitions from a higher to a lower energy level?
Quantum leap
ExplanationQuantum leap is the process where electrons emit photons during energy level transitions.
#2
In atomic emission spectroscopy, what type of energy transition results in the emission of visible light?
Transition from higher to lower energy levels
ExplanationVisible light emission occurs in atomic emission spectroscopy when electrons transition from higher to lower energy levels.
#3
What is the term for the minimum energy required to remove an electron from an atom in its ground state?
Ionization energy
ExplanationIonization energy is the minimum energy needed to remove an electron from an atom in its ground state.
#4
Which of the following elements is commonly used as a calibration standard in atomic emission spectroscopy?
Sodium
ExplanationSodium is commonly used as a calibration standard in atomic emission spectroscopy.
#5
Which of the following is NOT a type of atomic spectroscopy?
Atomic scattering spectroscopy
ExplanationAtomic scattering spectroscopy is not a type of atomic spectroscopy.
#6
What is the term for the phenomenon in which an atom absorbs light and transitions from a lower energy state to a higher energy state?
Absorption
ExplanationAbsorption is the phenomenon where an atom absorbs light and transitions from a lower to a higher energy state.
#7
Which scientist proposed the concept of quantized energy levels in an atom?
Niels Bohr
ExplanationNiels Bohr proposed the concept of quantized energy levels in an atom.
#8
What does the term 'spectroscopy' refer to in the context of atomic emission spectroscopy?
The study of atomic emission lines
ExplanationSpectroscopy in atomic emission spectroscopy refers to the study of atomic emission lines.
#9
Who developed the mathematical formalism for quantum mechanics known as wave mechanics?
Erwin Schrödinger
ExplanationErwin Schrödinger developed the mathematical formalism for quantum mechanics known as wave mechanics.
#10
In atomic emission spectroscopy, what is the primary source of excitation energy?
Light
ExplanationLight serves as the primary source of excitation energy in atomic emission spectroscopy.
#11
Who proposed the Bohr model of the atom, which describes electrons orbiting the nucleus in discrete energy levels?
Niels Bohr
ExplanationNiels Bohr proposed the Bohr model of the atom, describing electrons orbiting the nucleus in discrete energy levels.
#12
In atomic emission spectroscopy, what is the term for the characteristic pattern of spectral lines emitted by an element?
Spectral fingerprint
ExplanationSpectral fingerprint is the term for the characteristic pattern of spectral lines emitted by an element in atomic emission spectroscopy.
#13
Which quantum mechanical principle explains why certain energy levels in an atom are forbidden?
Pauli exclusion principle
ExplanationThe Pauli exclusion principle explains the forbidden nature of certain energy levels in an atom.
#14
What is the term for the phenomenon in which the wavelength of emitted light is longer than the incident light, as observed in atomic emission spectra?
Stark effect
ExplanationThe Stark effect is the phenomenon where the emitted light has a longer wavelength than the incident light in atomic emission spectra.
#15
Which quantum mechanical principle states that no two electrons in an atom can have the same set of quantum numbers?
Pauli exclusion principle
ExplanationThe Pauli exclusion principle states that no two electrons in an atom can have the same set of quantum numbers.
#16
Which phenomenon explains the splitting of spectral lines in a magnetic field, observed in atomic emission spectroscopy?
Zeeman effect
ExplanationThe Zeeman effect explains the splitting of spectral lines in a magnetic field, observed in atomic emission spectroscopy.
#17
Which phenomenon explains the broadening of spectral lines in atomic emission spectroscopy due to collisions between atoms or molecules?
Pressure broadening
ExplanationPressure broadening explains the broadening of spectral lines in atomic emission spectroscopy due to collisions between atoms or molecules.