How do you calculate and determine atomic number, mass number, and net charge? Atomic number is the number of protons in an atom. Mass number is the number of neutrons in an atom, and net charge describes how the protons and electrons balance out. Tip: This isn't the place to ask a question because the teacher can't reply.
PCL Tear Symptoms & Diagnosis. 1  Pain. Mild to moderate pain in the knee can cause a limp, knee âgiving outâ, or difficulty walking. 2  Swelling. Within hours of the injury, knee will swell rapidly. 3  Instability. Feeling of a loose knee and not stable when standing or walking.
The symptoms of a brachial plexus injury typically depend on the extent (number of nerve roots involved) and severity of the injury. 1  Immediate symptoms generally occur after a severe injury to the neck, shoulder, arm, or hand but may also occur after something as simple as laying on the arm for too long. The following are common symptoms of BPI: 1  Crushing or burning pain. 2  Decreased muscle tone and strength in the upper arm, forearm and/or hand. 3  Loss of function in the upper arm, forearm and/or hand. 4  Numbness. 5  Change in the Sweating patterns of the upper arm, forearm and/or hand. 6  Wrist drop or inability to extend the wrist.