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chem 5.2

Terms in this set (11)

Energy States of Hydrogen?
Bohar model suggstted that an electron has energy state excited which is far from the nucleas and ground state , and atom moves around the nucleus in only certain allowed circular orbits.also The smaller the electron's orbit the lower the atom's energy state, Conversely, the larger the electron's orbit, the higher the atom's energy state,
The hydrogen line spectrum?
N=1 level dose'nt have energy because the electron isn't moving but if it goes to N=2 there's an energy also the electron proudce energy while the change there energy level like going from N=4 till N=1 the atom energy proudced photon
dose the hydrogen atom emitt the same energy as it goes to lower or higher energy state ?
Yes it emitts the same energy as it goes to higher or lower energy state.
how do you calculte the photon energy ?
By moving to differen't energy levels from lower to higher then subtract the lower from the higher
why was Bohr's model not valid ?
first of all Heisenberg's Uncertainty Principle states you can never find the location of an electron and it's velocity , and the model only worked on hydrogen among elements , the model did'nt fully indicate the chemucal behavior of an atom, the orbitals don't move in a cirucal motion around the nucles
diference btween Bohr's atomic Model and the Quantum Mechanical Model?
Bohar state that electrons move in a orbits around the nucleus
Quantum Mechanical Model state that electrons move in a wave like movment
Where are electrons located?
Electrons are in orbitals found within sublevels, that are in turn located within principal levels,Every orbital can take up a maximum of 2 electrons.
Principal levels are numbered from 1- 7
Sublevels are of four types: s, p, d, f
Pauli Exclusion Principle?
no two electrons can share the same combination of four quantum numbers. quantum numbers can locate the electron configuration and location also radius and ionization
identify quantum numbers of electrons in atoms?
principal quantum number, n , it refers to the size of the orbital and the energy level an electron is placed in.
The number of subshells, or l , describes the shape of the orbital. It can also be used to determine the number of angular nodes.

The magnetic quantum number, ml, describes the energy levels in a subshell, and ms refers to the spin on the electron, which can either be up or down.
What is the name of the orbital with quantum numbers n=4 and l=1?
the principal quantum number n is 4 and using the table above, we can conclude that it is
What is the name of the orbital(s) with quantum number n=3?
3s, 3p, and 3d. Because n=3, the possible values of l = 0, 1, 2, which indicates the shapes of each subshell.
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