बोर के परमाणु सिद्धांत के अनुसार, निम्नलिखित में से कौन सा संबंध सही है? (जहाँ Z परमाणु क्रमांक है और n मुख्य क्वांटम संख्या है)

In the standard chemical symbol representation of an element, AZM, what do A and Z represent respectively?

Which theory did Niels Bohr challenge to explain line spectra of atoms?

According to the Bohr model, the energy of the emitted photon due to a transition from the 3rd excited state to the ground state in a hydrogen atom is: