For a hydrogen- like atom, classify these electron transitions by whether they result in the absorption or emission of light:
n=3 to n=5,
n=1 to n=3,
n=3 to n=2,
n=2 to n=1?
ignoring the sign, which transition was associated with the greatest energy change?

When an electron transit from lower level to higher level it emits energy

When an electron transit from higher level from a lower level it absorbs energy

n=3 to n=5,  : absorption

n=1 to n=3,  : absorption

n=3 to n=2,  : emission

n=2 to n=1 : emission

the highest energy means highest wave number

wave number = Rh (1/ n1^2 - 1/n2^2)

Rh = 1.1 X 10^7 m^-1

1) n=3 to n=5

wavenumber = Rh ( 1/ 9 - 1/ 25) = 0.071 Rh

2) n=1 to n=3

wavenumber = Rh ( 1- 1/9 ) = 0.89 Rh

3) n=3 to n=2

wavenumber = Rh ( 1/4 - 1/9) = 0.139 Rh

4) n=2 to n=1

wavenumber = Rh ( 1- 1/4) = 0.75 Rh

Thus for 2) n=1 to n=3 energy will be maximum

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.