What is the energy needed to raise an electron in the hydrogen atom from the second energy level to the third energy level ?
a.) 1.52x10^4 j b.) 3.63*10^-19 j c.) 2.18x10^-19 j d.) 4.48x10^-9 j e.) 3.03*10^-19j

Can you guys answer these questions i need it before 1: 00pm

Need , hurry pls create a superhero out of the element iron, what are its powers and his sidekick ( an element that works well with iron). how was the superhero made and who discovered him

El amoniaco y el fluor reaccionan para formar tetrafluoruro de dinitrogeno y fluoruro de hidrogeno. segun la reaccion: nh3 + f2 ⇒ n2f4 + hf si reaccionan 5 gramos de amoniaco y 20 gramos de fuor, ¿cuantos gramos de fluoruro de hidrogeno se producen?