To Calculate Molecular Weight from Periodic Table.

Create a class Element for representing elements in the periodic table of elements. The constructor should define attributes to store element name, atomic number, symbol, and atomic weight, and accessor methods for each of these values. Create appropriate tests to verify the correctness of the implementation Create a class PeriodicTable. The data type should have: • a constructor that reads values from a file to create a dictionary whose keys are strings representing element symbols and whose values are Element objects. The file elements_1.txt on moodle contains the data pertaining to elements, one element per line. You will need to loop over the lines of the file and for each line use the string split() method to obtain the first four values in it (name, number, symbol, and weight). • a method weight() that takes in a string representing a molecule name, such as 'H2 O', and returns its molecular weight. The string split() method will again be useful here for separating the contribution of each atom. The methods isdigit() or isalpha() may be used to separate the atomic symbol (e.g., 'H') from the number of times it occurs