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DAT Chemistry Final Exam Prep Questions Correctly Answered.

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DAT Chemistry Final Exam Prep Questions Correctly Answered. Electromagnetic spectrum - CORRECT ANSWER Raging (longest wave length) Martins Invaded (ROYGBIV) Using X-ray Guns (shortest wave length) Aufbau - CORRECT ANSWER lowest energy fills first Heisenberg uncertainty principle ...

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  • August 14, 2024
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DAT Chemistry Final Exam Prep
Questions Correctly Answered.

Electromagnetic spectrum - CORRECT ANSWER Raging (longest wave length)

Martins

Invaded

(ROYGBIV)

Using

X-ray

Guns (shortest wave length)



Aufbau - CORRECT ANSWER lowest energy fills first



Heisenberg uncertainty principle - CORRECT ANSWER



Pauli exclusion - CORRECT ANSWER no two electrons can have the same 4 numbers



Hunds rule - CORRECT ANSWER dont pair up electrons until you have too



n - CORRECT ANSWER principle quantum number



-size

-n=row on table



l - CORRECT ANSWER azimuthal number



-shape of orbital

,-(n-1)



m - CORRECT ANSWER magnetic quantum number



-orientation of the particle in space

-includes 0

-number of orbitals possible



spin quantum number - CORRECT ANSWER tells about the spin of the electron



(pauli exclusion principle)



d block



f block - CORRECT ANSWER d block= 1 number less



f block= 2 number less



d block valence electrons - CORRECT ANSWER count d and s shell



what are the electron configuration exceptions - CORRECT ANSWER chromium (cr) group and copper
(cu) group



even numbers= - CORRECT ANSWER diamagnetic (exceptions are 10,16)



odd numbers - CORRECT ANSWER paramagnetic



unpaired

,ionic bonds have _____ mp, ______ bp, brittle, hard - CORRECT ANSWER high high



what is lattice energy - CORRECT ANSWER energy required to separate an ionic compound cations from
its anions



lattice energy formula - CORRECT ANSWER (charges)/bond distance



-greater charge = greater lattice energy



-shorter bond distance= greater lattice energy



Which of the following has the largest lattice energy



Li-F

Li-Cl

Li-Br

Li-I - CORRECT ANSWER Li-F



since it has the smallest size distance

due to F being a smaller atom compared to the others



metalloids - CORRECT ANSWER



is gas compressible - CORRECT ANSWER yes



conforms to volume and shape



simple unit cell atoms - CORRECT ANSWER 1

, body centered unit cell atoms - CORRECT ANSWER 2



face centered unit cell atoms - CORRECT ANSWER 4



amorphous solid - CORRECT ANSWER no ordered 3D arrangement



alkali metals have ________ ionization energy thus have high _________ - CORRECT ANSWER low
ionization energy



high reactivity



electron affinity - CORRECT ANSWER energy released when an electron is added to an atom in the gas
phase



-exothermic reaction



-exceptions : Be, N, Noble gases= 0



-Ne has no electron affinity



Ionization energy - CORRECT ANSWER minimum energy needed to remove an electron from an atom in
the gas phase



Why does ionization energy decrease as you move down a group - CORRECT ANSWER 1. electron
shielding: making it easier for outer electrons to be removed



Why does ionization energy increase as you move across a period - CORRECT ANSWER atomic radius
decreases thus the outer electrons become attracted to the nuclelus



becomes harder to remove the outer electron

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