PLS HELP CHEM MIDTERM TOMORROW Different materials are used in X-ray tubes to produce X-rays for different applications. The table lists the frequencies of
different materials that might be used in an X-ray tube.
Material
Frequency (Hz)
Cobalt
1.67 x 1018
1.95 x 1018
Copper
Molybdenum
4.23 x 1017
What is the energy of photons given off in an X-ray tube that contains molybdenum, in units of 1 x 10-16)?

Thanks in advance !!

explanation:

i did this but i forgot how to do it

considering the question as per the attachment

here we can see that the radon nuclide has 222 as the atomic mass number and 86 as the atomic number.

when it undergoes nuclear fission it gives polonium which has atomic mass number as 218 and atomic number will be 84 along with a helium nucleus which has 4 atomic mass number and 2 as its atomic number.

222 = 218 + 4 (atomic mass number)

86 = ? + 2; therefore ? = 86-2 = 84.

the atomic mass number of polonium will be 84.