Chemistry
Atomic Structure
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#57 Shielding effect is stronger for:
A) Valence electrons
B) Inner electrons
C) Nucleus
D) Vacuum
Answer: B
#58 Effective nuclear charge increases when:
A) Shielding increases
B) Shielding decreases
C) Electrons are added in the same shell
D) Atomic number decreases
Answer: B
#59 In a given shell, the relative subshell energy order is usually:
A) p < s < d < f
B) s < p < d < f
C) d < s < p < f
D) f < d < p < s
Answer: B
#60 Aufbau order places 4s before:
A) 3d
B) 4p
C) 4d
D) 5s
Answer: A
#61 Ground state configuration of hydrogen is:
A) 1s1
B) 1s2
C) 2s1
D) 2p1
Answer: A
#62 Valence electrons are located in the:
A) Nucleus
B) Innermost shell
C) Outermost shell
D) All shells equally
Answer: C
#63 An emission spectrum is produced when electrons:
A) Jump to higher levels
B) Fall to lower levels
C) Remain stationary
D) Ionize
Answer: B
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