B. The electron in a hydrogen atom can undergo a transition from n = 6 ton = 1, emitting a photon with energy 2.11 x 10-18 J.

i. What is the frequency of this transition?

ii. How does this transition show that the energy of a phonto is quantized?

An atom of sodium-23 (atomic number = 11) has a positive charge of +1. give this information, how many electrons does it have? how many proteins and neutrons does this atom have

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds