Which of the following statements is TRUE regarding the M-sh…

Which of the following statements is TRUE regarding the M-shell of an atom?      1. has higher binding energy than those in the N-shell     2. does not exceed 18 orbital electrons     3. never exceeds 8 orbital electrons     4. are closer to the nucleus than those in the L-shell

Shyla experiences a long delay between the time that she goe…

Shyla experiences a long delay between the time that she goes to bed and the time that she falls asleep. In addition, she wakes up several times during the night and has difficulty getting back to sleep. To diagnose Shyla with insomnia, she must experience these symptoms________.