Electronic Configuration with Answers

Electronic Configuration PRACTICE Quiz (QUEST!) ANSWER KEY For EACH of the following questions, write the: Full electronic configuration CORE electronic configuration Orbital Representation diagram (based from CORE electronic configuration) Lewis Dot Diagram Full electronic configuration Showing ALL of the electrons in every energy level from n = 1, for Ga: Si 1s 2 2s 2 2p 6 3s 2 3p 2 Core electronic configuration Showing electrons of an element, starting at the PREVIOUS noble gas Si 3s [Ne] 2 3p ↑↓ 2 ↑ ↑ Orbital representation diagram Showing paired electrons with opposite spins, in each orbital: As 1s 2 2s 2 [Ar] 4s 2p 2 ↑↓ Rh 2 2 3d 3s 2 3p 10 6 2 2 ↑↓ 2 6 2 ↑↓ 2 3d 10 4p 3 3 ↑ ↑ ↑ 10 4p 5s 4d 6 2 7 10 4p 5s 4d 6 2 10 7 ↑↓ ↑↓ ↑ ↑ ↑ 6 2 6 2 1s 2s 2p 3s 3p 4s 3d [Xe] 6s 4s 4p 1s 2s 2p 3s 3p 4s 3d 2 6 ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ [Kr] 5s 4d Ta 6 2 14 6 2 3 4f 5d ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ 14 5p 6s 4f . 5d 3 2 2 6 2 6 2 10 Th 1s 2s 2p 3s 3p 4s 3d [Rn] 7s 2 10 6 2 14 5p 6s 4f 5d 10 6 2 6 Mg+2 1s 2s 2p 3s . 2 2 [Ne] 3s 2 Co+2 [Ar] 4s 3d ↑↓ 7 ↑↓ ↑↓ ↑ ↑ ↑ 2 Co+4 [Ar] 4s 3d ↑↓ 5 ↑ ↑ ↑ ↑ ↑ 2 Tc+2 [Kr] 5s 4d ↑↓ 5 ↑ ↑ ↑ ↑ ↑ Db+5 [Rn] 7s 2 ↑↓ Hs+2 [Rn] 7s 2 ↑↓ 14 3 5f 6d ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ 14 . 6 5f 6d ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ ↑ ***The above answer is NOT as stable as this answer: [Rn] 7s 1 14 5f 6d 5 ↑ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ↑ ↑ ↑ ***The above answer is MORE correct, because ALL HALF FILLED orbitals is more stable than some half, some full, some empty. By that same argument, we may want to go back and suggest that a better answer for Co+2 is: 2 Co+2 [Ar] 4s 3d ↑↓ 5 ↑ ↑ ↑ ↑ ↑ 2 6p 7s 5f 2 ↑ ↑ 2 2 5f ↑↓ 2 6 4p 5s 4d P-3 [Ne] 3s 2 3p ↑↓ Te-2 [Kr] 5s ↑↓ ↑↓ ↑↓ 2 ↑↓ At-1 [Xe] 6s 4d 10 ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 2 5p 14 ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 2 4d 6 ↑↓ ↑↓ ↑↓ 4f ↑↓ Pd+2 [Kr] 5s 6 5d 10 ↑↓ ↑↓ ↑↓ ↑↓ ↑↓ 6p 6 ↑↓ ↑↓ ↑↓ 8 ↑↓ ↑↓ ↑↓ ↑↓ ↑ ↑ ***Sometimes, it is IMPOSSIBLE for ions to gain or lose electrons such that their final electron distribution is even. In these cases, we have no choice but to leave an awkward final electron configuration. That is why we would follow the original “rule” that atoms would lose valence electrons FIRST (valence electrons are s and p electrons), since in the case of Pd, losing d electrons would not make it a more stable arrangement for Pd+2 For the answers for the Lewis Dot Diagrams for each of the above atoms, you should be able to see that there are only 8 possible Lewis Dot Diagrams for ANY atom on the periodic table. It depends what family (column) the element is in. For the answers for the Lewis Dot Diagrams for Rh, Ta, Th, they would all look like this, as they all have s2 valence electrons (and then some d electrons that are never shown in the Lewis Dot Diagrams): Lewis Dot Diagrams ONLY include s and p electrons For the answers for the Lewis Dot Diagrams for CATIONS and ANIONS, they would all look like this: CATIONS (+1, +2, +3, +4) would have “empty” Lewis Dot Diagrams. ANIONS (-1, -2, -3, -4) would have FULL Lewis Dot Diagram. In both cases, however, the ion is said to have a stable octet in its outermost shell. Ionic and Covalent Bonding PRACTICE Quiz (QUEST!) For EACH of the following questions, show the: Electronegativity difference % ionic and covalent character Type of bond (ionic, polar covalent or NONpolar covalent) Lewis Dot Diagram Structural diagram if applicable H2O ANSWER KEY % covalent character 1.4 39% Ionic 61% Covalent Type of bond POLAR COVALENT bond Electronegativity difference % ionic character Lewis Dot Diagram: C2H6 STRUCTURAL DIAGRAM: % covalent character 0.4 4% Ionic 96% Covalent Type of bond POLAR COVALENT bond Electronegativity difference % ionic character STRUCTURAL and LEWIS DOT diagrams: CaI2 % covalent character 2.0 63% Ionic 37% Covalent Type of bond IONIC bond Electronegativity difference % ionic character Lewis Dot Diagram: I realize that this is the answer for CaCl2 But if you replace Cl with diagram I it would be the exact same KCl % covalent character 2.2 70% Ionic 30% Covalent Type of bond IONIC bond Electronegativity difference % ionic character There is no STRUCTURAL DIAGRAM for an IONIC COMPOUND.