False, atomic mass is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes
An exposure to sarin or sarin like chemical will caused the sarcoplasmic reticulum to be continuously stimulated by the continual electrical signal. This will open the calcium channels and allows the calcium ions to bind continuously with troponin. Sarin is an organophosphorus chemical which is highly poisonous. It is used as a chemical weapon of destruction.
The answer is called Scope. Hope this helps.