A 5)Account for the following:
1) lonisation enthalpy of Nitrogen is greater than that of oxygen. [2]
2) a) What is meant by isoelectronic species? (1)
b) Select the isoelectronic species from the following. N, 02-, F-,
Mg2+, Al2+, Na+ (1)
3)Cl has higher negative electron gain enthalpy than F.
[2]
i) The first ionization enthalpy of Na is less than that of Mg , but its second
ionization enthalpy is more than that of Magnesium
[3]
LO
MEN
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what is the speed of a softball that travels 20m in 2secs

speed = 20/2 = 10 m/s

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!

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