3 Chemistry Questions? Please Help?

Posted on 2014-12-18 07:30:00 in Chemistry by ALEX

1) The element whose electron configuration is 1s2 2s2 2p6 4s2 3d10 4p2 is:

Na
Si
Al
Ga
None of the listed answers are correct
Ge

2) Electrons in outermost (highest) occupied principal energy level

Select one:

None of the listed answers are correct
valence electrons
ionization electrons
excited electrons
core electrons
orbital electrons

3) Contains an electron with excess energy:

Select one:

ionization energy
core electrons
ground state
photon
None of the listed answers are correct
excited state

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