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of s 1 electrons 1s label of l value of n for H, atomic number = 1 Orbital Box notation spdf notation 1 no. Electron configuration can be given with the orbital box diagram, or with the spdf notation.In general, electrons are assigned to orbitals in order of increasing _.The arrangements of _ in the elements in the ground state.2s electron experiences a _ positive charge than expected.The 2s electron PENETRATES the region occupied by the 1s electron.– s electrons always have a lower energy than p electrons in the same quantum shell. Z* is _ for s electrons than for p electrons.C has 6 p (+) and 6 e (-) 2 e- in 1s 2 e- in 2s 2 e- in 2p e- in 2s should “see” +3, but see 3.22 e- in 2p should “see” a +2 charge, but see 3.14.Li has 3 p (+) and 3 e (-) 2 e in 1 s orbital 1 e in 2 s orbital e- in 2s should “see” a +1 charge, but it sees 1.28.Z* - the nuclear charge experienced by a particular electron in a multielectron atom, as modified by the presence of the other electrons.1 e- atomĮlectron cloud for 1s electrons Effective Nuclear Charge, Z* b) for subshells of same _, subshell with lower n is lower in energy. In many-electron atom: a) subshells increase in energy as value of _increases.For many-electron atoms, energy depends on both _ and _.Electrons generally assigned to orbitals of successively higher energy.3Ē +1 +1/2 Students should be familiar with the values and meaning of quantum numbers. Ī 2p electron can be designated by which set of quantum numbers? n l ml ms a. this shell has a single orbital (1s) to which 2e- can be assigned.Therefore, Each orbital can be assigned no more than _ electrons! The Pauli Exclusion Principle No two electrons in an atom can have the same set of four quantum numbers.
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ms, _ quantum number, = +1/2 and -1/2.Understand the fundamental physical properties of the elements and their periodic trends. Write the electron configuration for elements and monoatomic ions.
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Understand effective nuclear charge and its role in determining atomic properties. Atomic Electron Configurations and Chemical Periodicity Goals: Understand the role magnetism plays in determining and revealing atomic structure.
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