Scientists
This scientist introduced the quantum concept explaining blackbody radiation using quantized energy levels.
Answer: Who is Max Planck?
Solution: Max proposed that energy is emitted in discrete units called quanta, laying the foundation for quantum theory.
This model describes electrons as existing in orbitals rather than fixed paths.
Answer: What is the quantum mechanical model?
Solution: The quantum mechanical model replaces earlier models with probabilistic approach to electron behaviour
This quantum number describes the shape of an orbital.
Answer: What is the angular momentum (secondary) quantum number (l)?
Solution: The angular momentum (secondary) quantum number (l) determines the orbital shapes such as s,p,d,and f.
This type of orbital has a spherical shape.
Answer: What is an s orbital?
Solution: S orbitals are spherical, with the probability of finding an electron equally distributed around the nucleus.
The electron configuration of hydrogen is this.
Answer: What is 1s2?
Solution: Hydrogen has one electron which occupies the 1s orbital.
This scientist's principle states that you cannot simultaneously know the position and momentum of a particle with absolute precision.
Answer: Who is Werner Heisenberg?
Solution: The Heisenberg Uncertainty Principle highlights the fundamental limits of measuring quantum particles.
The quantum mechanical model is based on solving this type of mathematical equation.
Answer: What is the Schrödinger equation?
Solution: The Schrödinger equation calculates the wave function, which describes the probability distribution of an electron.
This quantum number determines the energy level of an electron.
Answer: What is the principal quantum number (n)?
Solution: The principal quantum number indicates the size and energy of an electron’s orbital.
This orbital type has a dumbbell shape.
Answer: What is a p orbital?
Solution: P orbitals have two lobes on opposite sides of the nucleus, forming a dumbbell shape.
The noble gas has the electron configuration 1s22s22p6
Answer: What is neon?
Solution: Neon has 10 electrons filling the first and second energy levels.
The physicist developed a wave equation that describes the behaviour of electrons in atoms.
Answer: Who is Erwin Schrödinger?
Solution: Schrödinger’s wave equation provides the probability of finding an electron in a given space, forming the basis for modern quantum mechanics.
This concept states that electrons fill the lowest energy orbitals first.
Answer: What is the Aufbau principle?
Solution: The Aufbau principle explains the order of electron filling in orbitals.
This quantum number specifies the orientation of an orbital in space.
Answer: What is the magnetic quantum number (ml)?
Solution: The magnetic quantum number (ml) ranges from -l to +l describing the direction of orbitals.
The 4f orbital belongs to this type of orbital.
Answer: What is an f orbital?
Solution: F orbitals are complex and belong to higher energy levels.
Write the electron configuration for chlorine.
Answer: What is 1s22s22p63s23p5?
Solution: Chlorine has 17 electrons distributed across the orbitals.
This scientist introduced the concept of matter waves, proposing that particles have wave-like properties.
Answer: Who is Louis de Broglie?
Solution: Louis de Broglie proposed that particles, like electrons, exhibit both particle and wave behaviour.
In this model, electrons are treated as waves spread over a region of space.
Answer: What is the wave-particle duality?
Solution: Wave-particle duality describes the dual nature of electrons and other quantum particles.
This quantum number determines the spin of an electron.
Answer: What is the spin quantum number (ms)?
Solution: The spin quantum number (ms) can be +½ or -½, indicating an electron’s spin direction.
What is the shape of a d-orbital?
Answer: What are cloverleaf shaped?
Solution: Most d-orbitals have cloverleaf shapes.
This element’s configuration ends in 4s23d104p3.
Answer: What is arsenic?
Solution: Arsenic has 33 electrons, with its configuration reflecting the Aufbau principle.
This scientist explained the photoelectric effect, proving that light behaves as both a particle and a wave.
Answer: Who is Albert Einstein?
Solution: Einstein’s explanation of the photoelectric effect earned him the Nobel Prize and supported the idea of photons, quantized packets of light.
This rule states that no two electrons in an atom can have the same set of four quantum numbers.
Answer: What is the Pauli Exclusion Principle
Solution: This principle ensures that each electron in an atom has a unique set of quantum properties.
For an electron in a 3d orbital, what are the possible values of l and ml?
Answer: What are l=2 and ml=-2, -1,0,+1,+2?
Solution: The l=2 corresponds to a d orbital, and ml ranges from -1 to +1.
The number of orbitals in a d subshell is this many.
Answer: What is 5?
Solution: The d subshell contains five orbitals, corresponding to ml values of -2,-1,0,+1,+2.
The shorthand configuration of silver (Ag) is this.
Answer: What is [Kr] 5s14d10
Solution: Silver has 47 electrons, with a filled 4d subshell and a single electron in 5s.