True or False The highest principal enegy level of period 2 elements is 2. Perio
ID: 505531 • Letter: T
Question
True or False
The highest principal enegy level of period 2 elements is 2.
Period 3 elements all have six 3p electrons.
Period 4 elements have an inner electron configuration of [Ar].
The valence electrons of group 5A elements are in the 6s subshell.
Group 8A elements have full outer principal s and p subshells.
The valence electrons of group 2A elements are in an s subshell.
The highest principal energy level of period 3 elements is 4.
Period 5 elements have an inner electron configuration of [Xe].
Explanation / Answer
The highest principal enegy level of period 2 elements is 2 ---- TRUE
Period 3 elements all have six 3p electrons ----- FALSE (Sodium has 6, Argon has 12)
Period 4 elements have an inner electron configuration of [Ar] ---- TRUE
The valence electrons of group 5A elements are in the 6s subshell --- FALSE
Group 8A elements have full outer principal s and p subshells ---- TRUE (Noble gas elements)
The valence electrons of group 2A elements are in an s subshell --- TRUE
The highest principal energy level of period 3 elements is 4 --- FALSE (n = 3)
Period 5 elements have an inner electron configuration of [Xe] ---- FALSE (They will have [Kr])
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