INORGANIC ACS FINAL EXAM WITH 100%
CORRECT ANSWERS 2026/2027/GRADED A+
1. Nuclide - ANSWER-an atom that is identified by the number of protons and
neutrons in its nucleus
2. frequency = - ANSWER-1/lambda
3. quantization of energy in H atom - ANSWER-only certain energy states are
allowed for the hydrogen atom, therefore any certain energizer of radiation are
observed in the spectrum;
4. quantum numbers - ANSWER-n, l, ml, ms
5. principal quantum number "n" - ANSWER-1 < n < infinity
6. distance from nucleus
7. from radial wavefunction, R
8. orbital quantum number "l" - ANSWER-0, 1, 2, 3... (n-1)
9. shape of orbital
10. from angular wavefunction A
,11. magnetic quantum number "ml" - ANSWER--l < ml < +l
12. directionality (for s orbital, ml has one value; for p orbital, ml has three values -
one for each of x, y, and z directions)
13. l = 0 - ANSWER-s orbital
14. l = 1 - ANSWER-p orbital
15. l = 3 - ANSWER-f orbital
16. l = 2 - ANSWER-d orbital
17. ml = -2, -1, 0, 1, 2 - ANSWER-d orbital
18. ml = -1, 0, 1 - ANSWER-p orbital
19. Schrodinger wave equation - ANSWER-a description of how the electron matter
wave varies with location and time around the nucleus of a hydrogen atom
20. Works for single-electron species
21. radial nodes - ANSWER-are spherical shells where the probability density is zero
22. nodes = n - l - 1
23. (n-1) radial nodes - ANSWER-ns orbital
24. (n-2) radial nodes - ANSWER-np orbital
, 25. (n-3) radial nodes - ANSWER-nd orbital
26. (n-4) radial nodes - ANSWER-nf orbital
27. radial distribution function - ANSWER-represents the total probability of finding
the electron within a thin spherical shell at a distance r from the nucleus
28. = 4*pi*r^2*R(r)
29. psi^2 - ANSWER-probability density; defines an orbital
30. Aufbau Principle - ANSWER-An electron occupies the lowest-energy orbital that
can receive it
31. Pauli Exclusion Principle - ANSWER-no two electrons in the same atom can
have the same set of four quantum numbers (electrons in a single orbital must
have opposite spins)
32. Hund's Rule - ANSWER-electrons occupying degenerate orbitals must have
parallel spins
33. Zeff - ANSWER-effective nuclear charge, amount of pull felt by the outer
electrons by the nucleus; involves shielding constant, S
34. Zeff = Z - S
35. Periodic Trends: First Electron Affinity (EA1) - ANSWER-it increases from left to
right across a period and decreases from top to bottom in a group
CORRECT ANSWERS 2026/2027/GRADED A+
1. Nuclide - ANSWER-an atom that is identified by the number of protons and
neutrons in its nucleus
2. frequency = - ANSWER-1/lambda
3. quantization of energy in H atom - ANSWER-only certain energy states are
allowed for the hydrogen atom, therefore any certain energizer of radiation are
observed in the spectrum;
4. quantum numbers - ANSWER-n, l, ml, ms
5. principal quantum number "n" - ANSWER-1 < n < infinity
6. distance from nucleus
7. from radial wavefunction, R
8. orbital quantum number "l" - ANSWER-0, 1, 2, 3... (n-1)
9. shape of orbital
10. from angular wavefunction A
,11. magnetic quantum number "ml" - ANSWER--l < ml < +l
12. directionality (for s orbital, ml has one value; for p orbital, ml has three values -
one for each of x, y, and z directions)
13. l = 0 - ANSWER-s orbital
14. l = 1 - ANSWER-p orbital
15. l = 3 - ANSWER-f orbital
16. l = 2 - ANSWER-d orbital
17. ml = -2, -1, 0, 1, 2 - ANSWER-d orbital
18. ml = -1, 0, 1 - ANSWER-p orbital
19. Schrodinger wave equation - ANSWER-a description of how the electron matter
wave varies with location and time around the nucleus of a hydrogen atom
20. Works for single-electron species
21. radial nodes - ANSWER-are spherical shells where the probability density is zero
22. nodes = n - l - 1
23. (n-1) radial nodes - ANSWER-ns orbital
24. (n-2) radial nodes - ANSWER-np orbital
, 25. (n-3) radial nodes - ANSWER-nd orbital
26. (n-4) radial nodes - ANSWER-nf orbital
27. radial distribution function - ANSWER-represents the total probability of finding
the electron within a thin spherical shell at a distance r from the nucleus
28. = 4*pi*r^2*R(r)
29. psi^2 - ANSWER-probability density; defines an orbital
30. Aufbau Principle - ANSWER-An electron occupies the lowest-energy orbital that
can receive it
31. Pauli Exclusion Principle - ANSWER-no two electrons in the same atom can
have the same set of four quantum numbers (electrons in a single orbital must
have opposite spins)
32. Hund's Rule - ANSWER-electrons occupying degenerate orbitals must have
parallel spins
33. Zeff - ANSWER-effective nuclear charge, amount of pull felt by the outer
electrons by the nucleus; involves shielding constant, S
34. Zeff = Z - S
35. Periodic Trends: First Electron Affinity (EA1) - ANSWER-it increases from left to
right across a period and decreases from top to bottom in a group
