Which of the following is a common property of Noble Gases?
2 answers:
Answer: the property of noble gases which is common is that they have a full outer shell of electrons.
Explanation:
Noble gases are the gases belonging to Group 18 of the periodic table. The electronic configuration for these gases are:
From the electronic configuration, it is visible that they have fully filled outer shell and hence, these gases are least reactive of all the elements in the periodic table.
As, they are not reactive and therefore they do not form any chemical compounds easily.
From the electronic configuration, it is visible that there are no free electrons in these gases, therefore, they are not good conductors of electricity.
Hence, the correct answer is that they all have full outer shell of electrons.
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Answer:
D.
Explanation:
To solve the problem it is necessary to apply the concepts of Destructive and constructive interference. The constructive interference in tin film is given by
Where,
t = thickness
Wavelenght
m= is an integer
n= film/refractive index
We use this equaton because phase change is only present for gasoline air interface, but not at the gasoline-water interface. <em>The minimum t only would be when the value of m=0 then</em>
Therefore the correct answer is D. The minimum thickness of the film to see ab right reflection is 100nm