Question

Which one of the following regions of electromagnetic radiation, the line spectrum appears when the electron transition occurs from energy level n = 5 to energy level n = 1 ?
a) ultraviolet b) visible c) infrared d) for infrared

Answer 1

Answer:

Pb(NO3)2 Δ-> PbO + O2 + NO2 . The number of NO2 molecules in balanced equation are​....

Explanation:

Pb(NO3)2 Δ-> PbO + O2 + NO2 . The number of NO2 molecules in balanced equation are​........