Chem 103 (module 3) Questions with
Verified Answers
Core Electrons (stay at home Netflix) - ANSWERS-Electrons in filled shells
-Have limited influence on atomic properties
-Generally unaltered in chemical reactions
Valence Electrons (Free spirit) - ANSWERS-Electron in shell with largest N
-Determine how an atom interacts with other atoms
-Gained/Lost/Shared
-Dictate how atoms react with other atoms
electron configuration - ANSWERSwhole sequence (1s2,2s2, etc.)
Core electron example (Ne) - ANSWERS1s2, 2s2, 2p6
Valence Electron example (S) - ANSWERS[Ne] 3s2, 3p4
General Principle: - ANSWERSNeutral atom (s or p block) will gain or lose enough
electrons to become isoelectronic with nearest noble gas
Isoelectronic: - ANSWERSidentical electron count, configuration
Metals: - ANSWERSlose valence electron(s)
Non-Metals: - ANSWERSgain valence electron(s)
d-block metals: - ANSWERSform stable cations with different charges that are difficult
to predict
P3(-) = 18e(-) : 1s2, 2s2, 2p6, 3s2, 3p6 - ANSWERSwrite complete electron
configuration of phosphorus and the phosphide ion
Ba[Xe]: 6s2
Ba2(+) : [Xe] - ANSWERSwrite condensed electron configuration of barium and the
barium ion
Pt[Xe] : 6s2, 4f14, 5d8
Pt4(+) : [Xe] 4f11, 5d6 - ANSWERSwrite condensed electron configuration of platinum
and the platinum (IV) ion
Controlling factor: - ANSWERStrends in effective nuclear charge (Z eff)
Verified Answers
Core Electrons (stay at home Netflix) - ANSWERS-Electrons in filled shells
-Have limited influence on atomic properties
-Generally unaltered in chemical reactions
Valence Electrons (Free spirit) - ANSWERS-Electron in shell with largest N
-Determine how an atom interacts with other atoms
-Gained/Lost/Shared
-Dictate how atoms react with other atoms
electron configuration - ANSWERSwhole sequence (1s2,2s2, etc.)
Core electron example (Ne) - ANSWERS1s2, 2s2, 2p6
Valence Electron example (S) - ANSWERS[Ne] 3s2, 3p4
General Principle: - ANSWERSNeutral atom (s or p block) will gain or lose enough
electrons to become isoelectronic with nearest noble gas
Isoelectronic: - ANSWERSidentical electron count, configuration
Metals: - ANSWERSlose valence electron(s)
Non-Metals: - ANSWERSgain valence electron(s)
d-block metals: - ANSWERSform stable cations with different charges that are difficult
to predict
P3(-) = 18e(-) : 1s2, 2s2, 2p6, 3s2, 3p6 - ANSWERSwrite complete electron
configuration of phosphorus and the phosphide ion
Ba[Xe]: 6s2
Ba2(+) : [Xe] - ANSWERSwrite condensed electron configuration of barium and the
barium ion
Pt[Xe] : 6s2, 4f14, 5d8
Pt4(+) : [Xe] 4f11, 5d6 - ANSWERSwrite condensed electron configuration of platinum
and the platinum (IV) ion
Controlling factor: - ANSWERStrends in effective nuclear charge (Z eff)
