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What type of idea, old or new, is the quantum model referred as?
New idea! The quantum model of an atom is referred to as the new idea in chemistry while the atomic theory is referred to as the old idea.
According to quantum theory, electrons have a … duality
Electrons have a wave-particle duality! This means that they can behave both as particles AND waves.
True or False: According to the atomic theory, atoms are indestructible?
True! In the old atomic theory, atoms were believed to be indestructible but PEN can actually be destroyed and it can produce tons of energy.
What are positive particles called?
Alpha particles!
Which scientists are associated with the old atomic theory?
Dalton, Thomson, Rutherford, and Bohr
Which scientists are associated with the quantum model?
De Broglie and Schrodinger
Which scientist proposed the idea of electrons having wave-like properties?
De Broglie!
The small letter, n, represents
The Principal Quantum Number
The size and energy of an orbital is described by…
The Principal Quantum Number
The shape of an orbital is described by the…
The Angular Momentum (Secondary)
The orientations or the number of orbitals are described by the…
Magnetic Quantum Number
The spin or the arrangement of an electron is described by the…
The Spin Quantum Number
What subshell number does f represent?
The subshell number that f represents is the 3rd subshell!
What values are allowed for ms?
The allowed values are +½ or -½
What values are allowed for mL?
The allowed values are -l to l
What values are allowed for n?
The allowed values are n = 1, 2, 3 to infinity
How can electrons move between different orbitals
Electrons can move between different orbitals by absorbing or emitting quanta of energy
This principle states that each electron is added into the subshell with the lowest energy orbital available?
Aufbau Principle
This principle states that each orbital subshell gets a single electron first and then electrons can pair.
Hund’s Rule
This principle states that no electron can have the same 4 quantum numbers in an atom.
Pauli Exclusion Principle
The electron configuration of this atom is 1s22s22p63s23p64s23d6, which atom is this?
The atom is Iron! If you add all the exponents together, they will equal to 26 and 26 is Iron’s atomic number!
Which energy level is the weakest and why?
1s! 1s is the weakest as it is the closest to the nucleus out of all the levels, making them feel a stronger nuclear charge.
If n = 2, what is l?
n - 2 = 1
Therefore, l for when n = 2 is either 0 or 1!
If n = 8, how many orbitals are there?
mL = n2
mL = 82
mL = 64
Therefore, when n = 8, there are 64 orbitals.
The electron configuration for this element is 1s22s22p63s24s23d104p3, which element is this?
The element is arsenic! Once the exponents are added, they all equal to 33 which is the atomic number of arsenic.