It detects ionizing radiation<span> such as alpha particles, beta particles and gamma </span>rays<span>using the ionization effect produced in a </span>Geiger<span>–Müller tube; which gives its name to the instrument.</span>
Assuming we have 100 g of sample
30.45/MW of N 14g = 2.175
69.55/MW of O 16g = 4.34
4.34/2.185 = 2
for every 1 mole of N we have 2 moles of O
so the empirical formula would be NO2
without having the molecular weight of the entire molecule the molecular formula can not be determined with the information in your question
B.it is not balanced for charge or for number of atoms.
Well we need to see the fossil