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Topic: Principal quantum number

Related Topics

Azimuthal quantum number

Atomic orbital

Quantum number

Molecular orbital

Electron configuration

Energy level

Lyman series

Magnetic quantum number

Quantum mechanics

Atom

Number

Electron orbital

Transition metal

Spin quantum number

Bohr model

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	Quantum Numbers and Electron Configurations
		It forces the number of subshells in a shell to be equal to the principal quantum number for the shell.
		The number of orbitals in a shell is the square of the principal quantum number: 1
		The number of orbitals in a subshell is therefore 2(l) + 1.
	chemed.chem.purdue.edu /genchem/topicreview/bp/ch6/quantum.html (2581 words)

	Atom - MSN Encarta
		This number is called the orbital’s secondary quantum number, or its angular momentum quantum number (abbreviated l).
		An s-orbital, with a secondary quantum number of 0, is spherical.
		Together, the principal, secondary, and magnetic quantum numbers specify a particular orbital in an atom.
	encarta.msn.com /encyclopedia_761567432_5/Atom.html (1207 words)

	Principal quantum number - Wikipedia, the free encyclopedia
		In atomic physics, the principal quantum number symbolized as n is the first of a set of quantum numbers (which includes: the principal quantum number, the azimuthal quantum number, the magnetic quantum number, and the spin quantum number) of an atomic orbital.
		The four quantum numbers n, l, m, and s specify the complete and unique quantum state of a single electron in an atom called its wavefunction or orbital.
		The principal quantum number n represents the relative overall energy of each orbital and the energy of each orbital increases as the distance from the nucleus increases.
	en.wikipedia.org /wiki/Principal_quantum_number (472 words)

	Quantum Physics - Solid-State Device Theory
		The number of subshells in a shell is equal to the shell's principal quantum number.
		In this notation, the shell number is shown as an integer, the subshell as a letter (s,p,d,f), and the total number of electrons in the subshell (all orbitals, all spins) as a superscript.
		Quantum mechanics, first as a hypothesis and later as a theory, has proven to be extremely successful in predicting experimental results, hence the high degree of scientific confidence placed in it.
	www.opamp-electronics.com /tutorials/quantum_physics_3_02_02.htm (4716 words)

	Meteorite Book: Glossary Q
		QUANTUM NUMBERS – Numbers specifying the exact state of an electron in an atom (principal, angular, magnetic, and spin quantum numbers).
		The principal quantum number (n = 1, 2, 3...) indicates the distance between the electron and the nucleus.
		The average distance increases with n, and hence quantum states with different principal quantum numbers are said to belong to different shells.
	www4.nau.edu /meteorite/Meteorite/Book-GlossaryQ.html (533 words)

	Crystal Chemistry
		The orbital shape quantum number has the following values and designations for the shape of the probability region in which the electrons are most probably to be found.
		As the atomic number (number of protons) in an atom increases, the shells and sub-shells with lower energy are filled first.
		In a neutral atom, the number of protons and the number of electrons are equal, thus the number of positive charges is the same as the number of negative charges and the atom has no charge.
	www.tulane.edu /~sanelson/eens211/crystal_chemistry.htm (3283 words)

	ACTIVITY LEARNING QUANTUM NUMBERS AND THEIR RELATIONSHIPS (Site not responding. Last check: 2007-10-08)
		To explain the arrangement of electrons in an atom, quantum numbers are used.
		Quantum numbers are identified as principal, orbital, magnetic, and spin.
		Each orbital is described by a number symbolizing the principal quantum number and a letter symbolizing the orbital quantum number.
	www.unco.edu /chemquest/3con11w.htm (626 words)

	Quantum numbers/electron configuration
		The first or principal quantum number, n, refers to the energy levels 1 – 7 (corresponding to the row numbers on the periodic table).
		The "azimuthal quantum number" (l) defines the shape of the orbital and is generally designated by the letters s,p,d, and f.
		The quantum numbers n, l, and ml describe relative cloud size (n), the shape of the cloud (l), and direction of the cloud (ml).
	www.salineschools.com /users/sparksb/quantum.html (1999 words)

	Quantum Numbers (Site not responding. Last check: 2007-10-08)
		model was a one-dimensional model that used one quantum number to describe the electrons in the atom.
		Quantum Chemistry: Describes the way atoms combine to form molecules and the way molecules interact with one another, using the rules of quantum physics.
		One of the key insights in quantum chemistry is that, because an electron is not a classical particle located at a definite point in space, even a single electron can "surround" the nucleus of an atom, filling a volume roughly as big as the whole atom.
	www.howe.k12.ok.us /~jimaskew/cquantum.htm (955 words)

	Dialogos of Eide: N category and the Hydrogen spectrum
		In this case, the electron is excited from the base state, with a principal quantum number of n = 1, to a level with a principal quantum number of n = 4.
		In this case, the electron is excited from the base state, with a principal quantum number of n = 1, to a level with a principal quantum number of n = 7.
		In this case, the electron is excited from the base state, with a principal quantum number of n = 1, to a level with a principal quantum number of n = 8.
	eskesthai.blogspot.com /2006/12/n-category-and-hydrogen-spectrum.html (1020 words)

	General Chemistry Online: Glossary: Electrons in atoms
		The number of orbitals in a subshell is the same as the number of possible m
		quantum number has only two possible values, the Pauli principle says that a maximum of two electrons can occupy an atomic orbital- and these electrons must have opposite spins.
		The quantum number that determines the size and (in hydrogen atoms) the energy of an orbital
	antoine.frostburg.edu /chem/senese/101/electrons/glossary.shtml (1144 words)

	Hydrogen Schrodinger Equation
		In order to separate the equations, the radial part is set equal to a constant, and the form of the constant on the right above reflects the nature of the solution of the colatitude equation which yields the orbital quantum number.
		The principal quantum number or total quantum number n arises from the solution of the radial part of the Schrodinger equation for the hydrogen atom.
		In the notation of the periodic table, the main shells of electrons are labled K(n=1),L(n=2),M(n=3), etc. based on the principal quantum number.
	hyperphysics.phy-astr.gsu.edu /hbase/quantum/hydrad.html (296 words)

	concep3
		Similarly, quantum numbers begin with the general location of the electron, n, and progress to the specific orientation, m s.
		In (a), all the subshells of a principal shell are grouped together, and the subshells of highest principal quantum number are placed last.
		This method has two advantages: (1) it keeps the subshells of each principal quantum number together, and (2) it is easy to see which electrons will be lost first upon chemical reaction (those of the highest principal quantum number, which are placed last).
	intro.chem.okstate.edu /ChemSource/Atomic/concpt3.htm (2019 words)

	Quantum Numbers and Atomic Energy Levels
		This dependence upon the orbital quantum number of a single excited state electron is accounted for by the penetration of the wavefunction and can be clearly seen in the energy levels of the alkali metals such as lithium and sodium.
		Note that for given values of principal and orbital quantum numbers, the states with parallel spins are significantly lower than those with anti-parallel spins.
		When an external interaction such as a magnetic field is applied, then further splitting of the energy levels occurs, and that splitting is characterized in terms of the magnetic quantum number associated with the z-component of angular momentum.
	hyperphysics.phy-astr.gsu.edu /hbase/quantum/qnenergy.html (504 words)

	Chemistry : Chapter 3 : Overview (Site not responding. Last check: 2007-10-08)
		For each quantum number there is a set of possible values and each quantum number describes some aspect of the electron and its orbital.
		The first quantum number is called the principal quantum number and is represented by n.
		The third quantum number is the magnetic quantum number.
	www.wwnorton.com /chemistry/overview/ch3.htm (2305 words)

	Overview
		The new quantum numbers proposal or postulate is that the electron shells are grouped in levels, and they are defined by the principal quantum number n, or in other words, each level consists of two shells.
		Each of the electron shells beside the quantum number mark ns is noted by the letters K, L, M, N, O, P, Q, and R (the same designations as the present ones of the shells), or the numbers 1, 2, 3, 4, 5, 6, 7, and 8.
		With the new scheme of the quantum numbers, the same filling order of the subshells is enabled, (so that the problem of jumpig is solved during the subshells' filling with the electrons according to the present postulates.
	www26.brinkster.com /uptable/ups1.htm (1336 words)

	Dictionary P (Part 3 of 3)
		The principal quantum group of an orbital determines the maximum number of electrons which can occupy that orbital and is represented by the expression 2n^2, where n is the principal* quantum number for the level.
		The principal quantum number n describes the general overall energy level and size of the orbital.
		As the principal quantum number increases, the size and energy level of the orbital increases, and the number of electrons which the orbital can hold also increases.
	www.ucc.ie /academic/chem/dolchem/html/dict/000p3.html (657 words)

	chapter10
		This quantum number is related to the shape of atomic orbitals.
		Therefore the maximum number of electrons in a sublevel l is twice the number of orbitals in the sublevel, 2x(2l+1).
		As the atomic number increases within a period, the general trend in ionization energy is an increase.
	www.elcamino.edu /faculty/hnguyen/chapter10.html (1421 words)

	Chemical Sciences; Electrons in Atoms: The Four Quantum Numbers
		The quantum numbers are all integers, which is not surprising if electrons have wave properties and the levels they occupy must correspond to an integral number of wavelengths.
		The four quantum numbers are called the principal or shell quantum number n, the momentum or subshell quantum number l, the magnetic quantum number m, and the spin quantum number s.
		Experimentally, electrons described by different principal or subshell quantum numbers are found to have different energies regardless of the presence of an external magnetic field, while those with different magnetic quantum numbers and the same principal and subshell quantum numbers show differences only in the presence of such a field.
	www.ualberta.ca /~jplambec/che/p101/p01224.htm (650 words)

	Re: Quantum numbers
		thoses are called the principal quantum number, adn the scenodary quantum number, the magnetic quantum number, and the spin magnetic number.
		the quantum number n is called the priciple quantum number.
		the magnetic quantum number, ml the magnetic quantum number splits the subshells into individual orbitals.
	vclass.mtsac.edu:920 /chem1a/_disc7/00000077.htm (336 words)

	Chapter 13 - Electrons in Atoms
		Relate the principal quantum number to the number of orbital types in an atom and to the number of individual orbitals in a given energy level.
		The second quantum number is called the angular momentum quantum number and it describes the shape of the orbital in which the electron has the highest probability of being found.
		The orientation of the orbital is denoted by the ____________________ quantum number.
	pages.prodigy.net /anderhan/Ch13EConfig.html (6268 words)

	BIOdotEDU
		It was trapped by the fact that it had to lose a whole quantum of energy all at one time, and that was not easy, so it orbited continuously in a track around the center waiting for something to happen.
		If this electron were hit by a photon of light, then the quantum of energy the light was carrying would be transferred to the electron, it would double in energy content and move to a higher orbit, one of the "excited states".
		A sub-shell is a group of electrons in a given atom that all have the same principal quantum number and the same orbital quantum number (L).
	www.brooklyn.cuny.edu /bc/ahp/LAD/C3/C3_elecPos_02.html (1807 words)

	Chemistry : Chapter 3 : Quantum Numbers (Site not responding. Last check: 2007-10-08)
		There are four things you need to know about each quantum number: (1) its name and symbol, (2) the acceptable/possible values of the number, (3) what the number says about the energy of the electron, and (4) what the number says about what the electron is doing.
		That is electrons D and E. The distance from the nucleus is determined by the n quantum number.
		The larger the number, the further from the nucleus.
	www.wwnorton.com /chemistry/concepts/chapter3/ch3_2.htm (1044 words)

	Lessons In Electric Circuits -- Volume III (Semiconductors) - Chapter 2
		Quantum physics describes the states of electrons in an atom according to the four-fold scheme of quantum numbers.
		To use the analogy of an amphitheater, quantum numbers describe how many rows and seats there are.
		Individual electrons may be described by the combination of quantum numbers they possess, like a spectator in an amphitheater assigned to a particular row and seat.
	www.ibiblio.org /obp/electricCircuits/Semi/SEMI_2.html (5441 words)

	The quantum mechanical view of the atom
		The Bohr model of the atom involves a single quantum number, the integer n that appears in the expression for the energy of an electron in an orbit.
		These are known as the principal quantum number, the orbital quantum number, the magnetic quantum number, and the spin quantum number.
		This quantum number is also an integer; it can be positive or negative, but it has a magnitude less than or equal to the orbital quantum number.
	physics.bu.edu /~duffy/PY106/PeriodicTable.html (1307 words)

	[No title]
		Quantum theory is a highly mathematical area of chemistry and physics, but we won't look at the complicated math part.
		Principal Quantum Number (n): designated by integer values greater than zero (1, 2, 3...); higher n value, higher probability of finding the electron farther from the nucleus; also, higher n value, higher energy of the electron (in general)
		Angular Momentum Quantum Number (l): designated by either integer values beginning with zero and increasing to one less than the principal quantum number (n) OR designated by letters s, p, d, f, g, etc.; value of l is dependent upon value of n for the wave function: l = 0, 1, 2,...
	www.gpc.edu /~mvenable/chem1421/0014.htm (735 words)

	Quantum Mechanics in Three dimension (Site not responding. Last check: 2007-10-08)
		The motion of an electron in a central field is one of the principal problems in the quantum mechanics of the atom.
		In the spectrscopic notation the principal quantum number n are said to form a
		quantum numbers for the first four shells are given in the table below.
	physics.berea.edu /~king/Teaching/ModPhys/QM/Quantum3d.htm (1770 words)

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