AFNS — AFNS Chemistry
Atomic Structure
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#17 Bohr model explains:
A) Hydrogen spectrum
B) All molecules only
C) Nuclear fission
D) Organic reactions
Answer: A
#18 Ground state is:
A) Lowest energy state
B) Highest energy
C) Ionized always
D) Excited always
Answer: A
#19 Excited electron returns by emitting:
A) Photon / light
B) Proton
C) Neutron
D) Nucleus
Answer: A
#20 s orbital is:
A) Spherical
B) Dumbbell
C) Clover
D) Linear only
Answer: A
#21 p orbital shape is:
A) Dumbbell
B) Spherical
C) Ring only
D) Cube
Answer: A
#22 Pauli exclusion principle:
A) No two electrons same 4 quantum numbers
B) Electrons attract
C) Protons spin
D) Neutrons pair
Answer: A
#23 Hund rule states:
A) Maximize unpaired electrons
B) Pair first always
C) No orbitals
D) Only s fills
Answer: A
#24 Aufbau principle:
A) Fill lowest energy orbitals first
B) Fill highest first
C) Random fill
D) Skip d always
Answer: A
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