In the notation of an atom `_ZX^A`. What does A & Z represent?

What does ELSI represents to?

What does the diagram represent ?

What does the given figure represent?

Draw I-V graph for a conductor. What does the slope represent ?

Write a general notation of nucleus of element X. What each term denotes?

What does the following symbols represent?

a. What does the graph represent ? b.What is the importance of this graph? c. What does the peak in the graph represent?