UWUnline teaching X cvg.cengagenow.com/filrn/takeAssignment/takeCovalentActivity
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UWUnline teaching X cvg.cengagenow.com/filrn/takeAssignment/takeCovalentActivity.do locator ass aseo This question has multiple parts. Work all the parts to get the most points a Using spdf moble gas notation, write the electron configuration for Ca Subshell Filling Chart 1s 2s 3p 4p- 3s 6s Sd 6p 7s 6d s-block elements p-block elements d-block elements (transition metals) f-block elements: lanthanides (n (Express your answer in condensed form, in order of increasing orbital energy) Using spdf noble gas notation, write the electron configuration for HeExplanation / Answer
a) Ca
Ca has atomic number 20 , has 20 electrons.
Hence its configuration is written as 1s2 2s2 2p63s23p6 4s2
In spdf noble gas notation the filled shells are replaced with the relevant, preceding noble gas in square brackets followed by spdf configuration of the valence shell.
Thus replacing 1s2 2s2 2p63s23p6 with [Ar]
Ca configuration is written as [Ar] 4s2
b) He
has onyl two electrons and no preceding noble gas
Thus its configuration is 1s2
c) LI
Li has atomic number 3 and 1s2 2s1 as the configuration.
In noble gas notation 1s2 is replaced with [He]
Thus Li configuration is [He] 2s1
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