ACS CHEMISTRY GENERAL 2026 ACTUAL EXAM
Actual Questions and Verified Answers
100% Guarantee Pass
1. how to find the correct number of neutrons:
Answer: mass number - atomic number
2. Forms of the same elements that differ in amount of neutrons:
Answer: isotopes
3. What particle, if lost from the nucleus, would NOT cause a change in the
atomic number?:
Answer: a neutron because it has no charge
4. When alpha particles were shot at a metal foil target, most passed through
without deflections, while others deflected at large angles. What did this sug-
gest to Rutherford?:
Answer: that the atoms of the metal were mostly empty space, while the nucleus consisted of most of the
mass which included highly condensed positive particles (which caused the deflection).
5. An atom has a valence shell configuration of 1s1. To which group of elements
,on the periodic table does it belong?:
Answer: IA
alkali metals
6. electromagnetic spectrum:
7. The greater the wavelength of a photon..?:
Answer: the lower its frequency
8. The greater the frequency of a photon...?:
Answer: the shorter its wavelength
9. Light energy formula:
10. What does C in the light energy formula represent?:
11. Give the ground-state electron configuration of an atom in the second peri-
od:
Answer: 1s2 2s1
12. Electrons configuration rule that states electrons do not pair until they have
to. (put one electrons in each electron domain then pair up):
Answer: Hund's rule
13. An experimental phenomena associated with atoms having unpaired elec-
trons - which states such substances are attracted to magnetic fields:
, Answer: Paramagnet- ism
14. Which drop in energy level results in the greatest emission of energy?:
Answer: n=2 to n=1
15. quantum numbers
16. What do the 4 quantum numbers stand for?:
Answer: n = energy level l = (n-1)
ml -l to l
mn 1/2 or -1/2 (spin)
17. List the quantum numbers for the s, p, d, and f orbitals:
Answer: s 1,0,0 p 2, 1, -1-0-1
d 3, 2, -2--1-0-1-2
f 4, 3 -3--2--1-0-1-2-3
18. Py orbital:
19. Which element is represented by X:
Answer: Chromium
20. What two subatomic particles have the most mass, but occupy very little of
the volume of an atom:
Answer: protons and neutrons
Actual Questions and Verified Answers
100% Guarantee Pass
1. how to find the correct number of neutrons:
Answer: mass number - atomic number
2. Forms of the same elements that differ in amount of neutrons:
Answer: isotopes
3. What particle, if lost from the nucleus, would NOT cause a change in the
atomic number?:
Answer: a neutron because it has no charge
4. When alpha particles were shot at a metal foil target, most passed through
without deflections, while others deflected at large angles. What did this sug-
gest to Rutherford?:
Answer: that the atoms of the metal were mostly empty space, while the nucleus consisted of most of the
mass which included highly condensed positive particles (which caused the deflection).
5. An atom has a valence shell configuration of 1s1. To which group of elements
,on the periodic table does it belong?:
Answer: IA
alkali metals
6. electromagnetic spectrum:
7. The greater the wavelength of a photon..?:
Answer: the lower its frequency
8. The greater the frequency of a photon...?:
Answer: the shorter its wavelength
9. Light energy formula:
10. What does C in the light energy formula represent?:
11. Give the ground-state electron configuration of an atom in the second peri-
od:
Answer: 1s2 2s1
12. Electrons configuration rule that states electrons do not pair until they have
to. (put one electrons in each electron domain then pair up):
Answer: Hund's rule
13. An experimental phenomena associated with atoms having unpaired elec-
trons - which states such substances are attracted to magnetic fields:
, Answer: Paramagnet- ism
14. Which drop in energy level results in the greatest emission of energy?:
Answer: n=2 to n=1
15. quantum numbers
16. What do the 4 quantum numbers stand for?:
Answer: n = energy level l = (n-1)
ml -l to l
mn 1/2 or -1/2 (spin)
17. List the quantum numbers for the s, p, d, and f orbitals:
Answer: s 1,0,0 p 2, 1, -1-0-1
d 3, 2, -2--1-0-1-2
f 4, 3 -3--2--1-0-1-2-3
18. Py orbital:
19. Which element is represented by X:
Answer: Chromium
20. What two subatomic particles have the most mass, but occupy very little of
the volume of an atom:
Answer: protons and neutrons
