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Chemistry, 11.02.2020 19:31 xxaurorabluexx
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
1. True
2. False
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The highest principal enegy level of period 2 elements is 2. Period 3 elements all have six 3p elect...
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