The atomic number of cadium is half the atomic number of curium. Define a variable and write an expression for the atomic number of cadmium. I'm working in a group with my friends and we need help we're not the same people.

N cadmium = .5 N of curium

To define a variable and write an expression for the atomic number of cadmium, let's represent the atomic number of cadmium as "Cd_num" or simply "x", for example.

Since the atomic number of cadmium is half the atomic number of curium, which we can represent as "Cm_num" or "y", we can write the expression as:

Cd_num = (1/2) * Cm_num

or

x = (1/2) * y

By substituting the appropriate values for "Cm_num" or "y", you can calculate the atomic number of cadmium, represented by "Cd_num" or "x".