Consider these electron transitions in a hydrogen atom: I. n = 2n=1
II. n = 3-n=1
III. n= 1 ->n= 4
Which of the electron transitions would release the most energy?
A)
B) II
C) III
D) I, II, and Ill release the same amount of
energy

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks. energy was destroyed inside the blocks. energy was absorbed into the blocks from outside the system. energy was transferred from the warmer block to the cooler block.

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions